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Polymorphism (biology)

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1150:). Some of these effects may be visible, and others cryptic, so it is often important to look beyond the most obvious effects of a gene to identify other effects. Cases occur where a gene affects an unimportant visible characteristic, yet a change in fitness is recorded. In such cases, the gene's subsurface effects may be responsible for the change in fitness. Pleiotropism is posing continual challenges for many clinical dysmorphologists in their attempt to explain birth defects which affect one or more organ system, with only a single underlying causative agent. For many pleiotropic disorders, the connection between the genetic abnormality and its manifestations is neither apparent nor understood. 1228:(several tightly linked genes performing similar or identical functions) arises by duplication of a single original gene, this is usually not the case with supergenes. In a supergene some of the constituent genes have quite distinct functions, so they must have come together under selection. This process might involve suppression of crossing-over, translocation of chromosome fragments and possibly occasional cistron duplication. That crossing-over can be suppressed by selection has been known for many years. 1325:, a founder of niche research, commented "It is very likely from an ecological point of view that all species, or at least all common species, consist of populations adapted to more than one niche". He gave as examples sexual size dimorphism and mimicry. In many cases where the male is short-lived and smaller than the female, he does not compete with her during her late pre-adult and adult life. Size difference may permit both sexes to exploit different niches. In elaborate cases of 95: 4340: 4032: 650: 4181: 4042: 1267: 45: 1599: 1585: 637: 62: 1335:, female morphs mimic a range of distasteful models called Batesian mimicry, often in the same region. The fitness of each type of mimic decreases as it becomes more common, so the polymorphism is maintained by frequency-dependent selection. Thus the efficiency of the mimicry is maintained in a much increased total population. However it can exist within one gender. 1353:
population on Pemba Island, Tanzania functions to avoid detection from a mate-searching male. The researchers found that male mate preference is controlled by frequency-dependent selection, which means that the rare morph suffers less from mating attempt than the common morph. The reasons why females
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Endler's survey of natural selection gave an indication of the relative importance of polymorphisms among studies showing natural selection. The results, in summary: Number of species demonstrating natural selection: 141. Number showing quantitative traits: 56. Number showing polymorphic traits: 62.
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Polymorphism crosses several discipline boundaries, including ecology, genetics, evolution theory, taxonomy, cytology, and biochemistry. Different disciplines may give the same concept different names, and different concepts may be given the same name. For example, there are the terms established in
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Polymorphism is strongly tied to the adaptation of a species to its environment, which may vary in colour, food supply, and predation and in many other ways including sexual harassment avoidance. Polymorphism is one good way the opportunities get to be used; it has survival value, and the selection
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Rare variations are not classified as polymorphisms, and mutations by themselves do not constitute polymorphisms. To qualify as a polymorphism, some kind of balance must exist between morphs underpinned by inheritance. The criterion is that the frequency of the least common morph is too high simply
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was given much attention. The significance of the work on ecological genetics is that it has shown how important selection is in the evolution of natural populations, and that selection is a much stronger force than was envisaged even by those population geneticists who believed in its importance,
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Morphs must occupy the same habitat at the same time; this excludes geographical races and seasonal forms. The use of the words "morph" or "polymorphism" for what is a visibly different geographical race or variant is common, but incorrect. The significance of geographical variation is that it may
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Selection, whether natural or artificial, changes the frequency of morphs within a population; this occurs when morphs reproduce with different degrees of success. A genetic (or balanced) polymorphism usually persists over many generations, maintained by two or more opposed and powerful selection
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Debate has centered round the question of whether the component genes in a super-gene could have started off on separate chromosomes, with subsequent reorganization, or if it is necessary for them to start on the same chromosome. Originally, it was held that chromosome rearrangement would play an
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Genetic polymorphism is the simultaneous occurrence in the same locality of two or more discontinuous forms in such proportions that the rarest of them cannot be maintained just by recurrent mutation or immigration, originally defined by Ford (1940). The later definition by Cavalli-Sforza &
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Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed
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Selection acts differently at different levels. The fitness of a genotype may depend on the fitness of other genotypes in the population: this covers many natural situations where the best thing to do (from the point of view of survival and reproduction) depends on what other members of the
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In simple words, the term polymorphism was originally used to describe variations in shape and form that distinguish normal individuals within a species from each other. Presently, geneticists use the term genetic polymorphism to describe the functionally silent differences in
1154:"If a neutral trait is pleiotropically linked to an advantageous one, it may emerge because of a process of natural selection. It was selected but this doesn't mean it is an adaptation. The reason is that, although it was selected, there was no selection for that trait." 1170:) is present, but not if it is absent. This is one of the ways in which two or more genes may combine to produce a coordinated change in more than one characteristic (for instance, in mimicry). Unlike the supergene, epistatic genes do not need to be closely 728:'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. 1033:
Number showing both Q and P traits: 23. This shows that polymorphisms are found to be at least as common as continuous variation in studies of natural selection, and hence just as likely to be part of the evolutionary process.
805:. In polyphenism, an individual's genetic makeup allows for different morphs, and the switch mechanism that determines which morph is shown is environmental. In genetic polymorphism, the genetic makeup determines the morph. 845:
Polymorphism does not cover characteristics showing continuous variation (such as weight), though this has a heritable component. Polymorphism deals with forms in which the variation is discrete (discontinuous) or strongly
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Bodmer (1971) is currently used: "Genetic polymorphism is the occurrence in the same population of two or more alleles at one locus, each with appreciable frequency", where the minimum frequency is typically taken as 1%.
1263:. Non-human apes have similar blood groups to humans; this strongly suggests that this kind of polymorphism is ancient, at least as far back as the last common ancestor of the apes and man, and possibly even further. 1463:
Without proper field-work, the significance of the polymorphism to the species is uncertain and without laboratory breeding the genetic basis is obscure. Even with insects, the work may take many years; examples of
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Cook, S.E.; Vernon, Jennifer G.; Bateson, Melissa; Guilford, Tim (February 1994). "Mate choice in the polymorphic African swallowtail butterfly, Papilio dardanus: male-like females may avoid sexual harassment".
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The polyphenic system does have a degree of environmental flexibility not present in the genetic polymorphism. However, such environmental triggers are the less common of the two methods.
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where a form is progressively replaced by another. By definition, genetic polymorphism relates to a balance or equilibrium between morphs. The mechanisms that conserve it are types of
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are a famous case in point. In ants the distinction between workers and guards is environmental, by the feeding of the grubs. Polymorphism with an environmental trigger is called
1239:. This is known as Turner's sieve hypothesis. John Maynard Smith agreed with this view in his authoritative textbook, but the question is still not definitively settled. 1302:
or loci involved. Only if competing selection disappears will an allele disappear. However, heterozygote advantage is not the only way a polymorphism can be maintained.
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Various synonymous terms exist for the various polymorphic forms of an organism. The most common are morph and morpha, while a more formal term is morphotype. Form and
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promoted natural selection as the primary explanation of variation in natural populations, instead of genetic drift. Evidence can be seen in Mayr's famous book
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in angiosperms are good examples. There is a long-standing debate as to how this situation could have arisen, and the question is not yet resolved.
408: 1366:. This switch may be genetic, or it may be environmental. Taking sex determination as the example, in humans the determination is genetic, by the 914:
in a population of animals, and "phase" as a color or other change in an organism due to environmental conditions (temperature, humidity, etc.).
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Fitness varies in time and space. Fitness of a genotype may vary greatly between larval and adult stages, or between parts of a habitat range.
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The term polymorphism also refers to the occurrence of structurally and functionally more than two different types of individuals, called
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try to avoid male sexual harassment are that male mating attempt can reduce female fitness in many ways such as fecundity and longevity.
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occurs when the expression of one gene is modified by another gene. For example, gene A only shows its effect when allele B1 (at another
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Goodale, M.A.; Sneddon, I. (August 1977). "The effect of distastefulness of the model on the predation of artificial batesian mimics".
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Turner, J. R. G. 1984. "Mimicry: The Palatability Spectrum and its Consequences". In R. I. Vane-Wright, & P. R. Ackery (eds.),
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Gosden, Thomas P.; Svensson, Erik I. (June 2009). "Density-Dependent Male Mating Harassment, Female Resistance, and Male Mimicry".
1122:: The fitness of a particular phenotype is dependent on its frequency relative to other phenotypes in a given population. Example: 3597: 3195: 136: 4364: 3842: 3832: 3756: 3031: 1485: 797:
According to the theory of evolution, polymorphism results from evolutionary processes, as does any aspect of a species. It is
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can be described as an outcome of sexual conflict. Cook et al. (1994) argued that the male-like phenotype in some females in
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Both pleiotropism and epistasis show that a gene need not relate to a character in the simple manner that was once supposed.
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of modifier genes may reinforce the polymorphism. In addition, polymorphism seems to be associated with a higher rate of
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Leimar, O (June 2005). "The evolution of phenotypic polymorphism: randomized strategies versus evolutionary branching".
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important role. This explanation was accepted by E. B. Ford and incorporated into his accounts of ecological genetics.
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or, as a rough guide, that it is greater than 1% (though that is far higher than any normal mutation rate for a single
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Weinberg, Robert A. (Robert Allan), 2013 "The biology of cancer". 2nd edition, Garland Science, Taylor & Francis
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The term was first used to describe visible forms, but it has been extended to include cryptic morphs, for instance
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However, many believe it more likely that the genes start on the same chromosome. They argue that supergenes arose
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Charlesworth, D.; B. Charlesworth (1975). "Theoretical genetics of Batesian mimicry III. Evolution of dominance".
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Charlesworth, D.; B. Charlesworth (1975). "Theoretical genetics of Batesian mimicry II. Evolution of supergenes".
1544:. Similar shifts in emphasis can be seen in most of the other participants in the evolutionary synthesis, such as 3535: 3332: 3142: 2910: 2803: 1692: 507: 482: 462: 442: 119: 4233: 3958: 3822: 3794: 3769: 3726: 3629: 3622: 3562: 3310: 3278: 3251: 3241: 2700:(3rd ed). New York: Columbia U. Pr. Note the contrast between these this edition and the original 1937 edition. 2656: 2605: 918:
and characteristics are also possible descriptions, though that would imply just a limited aspect of the body.
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by E. B. Ford and his co-workers from the mid-1920s to the 1970s (similar work continues today, especially on
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Genetic polymorphism is actively and steadily maintained in populations by natural selection, in contrast to
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of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a
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Charlesworth, D; B Charlesworth (1975). "Theoretical genetics of Batesian mimicry I. single-locus models".
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that may not always correspond to a phenotype, but always corresponds to a branch in the genetic tree. See
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was largely discounted as the leading mechanism for evolution, continued through the middle period when
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A conditional development strategy, where the phenotype of each individual is set by environmental cues
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Cain, Arthur J.; Provine, W. B. 1991. "Genes and Ecology in History". In R. J. Berry, et al. (eds.),
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Investigation of polymorphism requires use of both field and laboratory techniques. In the field:
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Occurrence of two or more clearly different morphs or forms in the population of a species
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The Eclipse of Darwinism: Anti-Darwinian Evolutionary Theories in the Decades Around 1900
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The mechanism which decides which of several morphs an individual displays is called the
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The relative proportions of the morphs may vary; the actual values are determined by the
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A mixed development strategy, where the phenotype is randomly assigned during development
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Balanced polymorphism refers to the maintenance of different phenotypes in population.
782:, which occurs in many organisms. Other examples are mimetic forms of butterflies (see 376: 279: 2244: 2198: 2152: 4358: 3990: 3868: 3827: 3673: 3567: 3442: 3427: 3095: 3090: 2415: 1757: 1688: 1518: 1501: 1497: 962: 907: 900: 527: 199: 2583: 2475: 2431: 4309: 3985: 3933: 3878: 3711: 3706: 3447: 3058: 2322: 1871: 1555: 1533: 1505: 1449: 1206: 1105: 974: 938: 767: 547: 532: 316: 311: 229: 4257: 4243: 4118: 4108: 4012: 3883: 3664: 3612: 3147: 2977: 2883: 2841: 2335: 1888:, pp. 154–163 (Tables 5.1, 5.2; Sects. 5.2, 5.3). Princeton: Princeton U. Press. 1525: 1399: 1371: 1225: 1218: 866: 823: 791: 732: 557: 274: 224: 44: 4248: 3873: 3774: 3696: 3683: 3572: 3432: 3117: 3004: 2982: 2935: 2930: 2878: 2846: 2506: 1580: 1446: 1395: 1311: 1257: 1253: 1210: 1175: 1147: 1113: 958: 942: 899:(1998). The shorter term morphism was preferred by the evolutionary biologist 813: 787: 775: 744: 717: 331: 254: 209: 189: 103: 2567: 2514: 2467: 2423: 2252: 2206: 2160: 4007: 3858: 3602: 3422: 3085: 2833: 1913: 1661: 1202: 1163: 1143: 1097: 978: 892: 859: 841:
Monomorphism means having only one form. Dimorphism means having two forms.
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were prominent, to the last quarter of the 20th century when ideas such as
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are sometimes used, but are easily confused in zoology with, respectively,
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Genes in Ecology: The 33rd Symposium of the British Ecological Society
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selection of an ecological area or areas, with well-defined boundaries
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1971. "Colour and Banding Morphs in Subfossil Samples of the Snail
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can be used to clarify that the different forms arise from the same
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The nature of selection: evolutionary theory in philosophical focus
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name. However, this invites confusion with geographically variant
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sequence between individuals that make each human genome unique.
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Ecological genetics and Evolution: Essays in Honour of E.B. Ford
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of the morphs at a particular time and place. The mechanism of
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Helinski, Michelle E. H.; Harrington, Laura C. (1 June 2012).
1198: 1074: 812:, within the same organism. It is a characteristic feature of 1484:). The results had a considerable effect on the mid-century 1468:
noted in the nineteenth century are still being researched.
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Cavalli-Sforza, Luigi Luca; Bodmer, Walter Fred (1999) .
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Female-limited polymorphism and sexual assault avoidance
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blood groups), the more complex forms are controlled by
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In just a couple of decades the work of Fisher, Ford,
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Ford, E. B. (1940). "Polymorphism and Taxonomy". In
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detailed survey of occurrence, habits and predation
766:Polymorphism is common in nature; it is related to 702:is the occurrence of two or more clearly different 2390:The evolutionary theater and the evolutionary play 71:jaguar (about 6% of the South American population) 1676: 1674: 1248:pressures. Diver (1929) found banding morphs in 1904:Ford, E. B. 1965. "Heterozygous Advantage". In 1730: 1728: 1935:. Jones & Bartlett Learning. p. 104. 4072: 2777: 1189:Although a polymorphism can be controlled by 977:usage, rice agriculture jargon, and informal 675: 8: 1900: 1898: 1896: 1894: 1791: 1789: 1787: 1785: 1142:Most genes have more than one effect on the 1052:Since all polymorphism has a genetic basis, 1751: 1749: 1747: 1714: 1712: 1710: 1708: 1706: 1704: 1702: 1700: 1657: 1655: 1429:relative numbers and distribution of morphs 1294:assures the population of some alternative 858:, whereas true polymorphism takes place in 4079: 4065: 4057: 2784: 2770: 2762: 682: 668: 77: 4273:Coloration evidence for natural selection 2711:The neutral theory of molecular evolution 2522: 2373: 2312: 2119:, pp. 335–336. London: Allen & Unwin. 1826: 997:Three mechanisms may cause polymorphism: 985:" (protection of a cultivar as a form of 760: 4018:Transgenerational epigenetic inheritance 1997: 1995: 1552:, though the latter was slow to change. 1476:Polymorphism was crucial to research in 2003:Ecology: from individuals to ecosystems 1630: 965:", which are formally regulated by the 743:is a term used somewhat differently by 85: 1007:An example of this can be seen in the 895:(1975), and for classical genetics by 3781:Dialogues Concerning Natural Religion 2743:"Notes on Rearing Scarlet tiger moth 2289:"Fossil records of Mendelian mutants" 1722:(4th ed.). London: Chapman & Hall 1510:neutral theory of molecular evolution 724:population (one with random mating). 7: 2115:Darlington, C.D.; Mather, K. 1949. 1685:Genetics of the Evolutionary Process 2495:Behavioral Ecology and Sociobiology 2356:Stimson, John; Mark Berman (1990). 2060:Detlefsen J.A.; Roberts E. 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Ledyard. 1966. 2245:10.1016/s0022-5193(75)80083-x 2199:10.1016/s0022-5193(75)80082-8 2153:10.1016/s0022-5193(75)80081-6 2005:. 4th ed, Blackwell, Oxford. 1962:. Courier. pp. 118–122. 1886:Natural Selection in the Wild 1741:(4th ed.) London: Hutchinson. 1120:Frequency dependent selection 822:has feeding individuals, the 3976:Missing heritability problem 3603:Gamete differentiation/sexes 2732:Heterostyly in the Cowslip ( 2653:Animal Species and Evolution 2416:10.1016/0003-3472(77)90117-8 2388:Hutchinson, G. Evelyn 1965. 2022:Nussbaum, Robert L. (2007). 1668:. Faber & Faber, London. 1538:Animal Species and Evolution 586:Evolution as fact and theory 2674:. New York: Columbia U. 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D. 1956. 1929:Hedrick, Philip (2011). 1811:"Morphism and Evolution" 1185:The origin of supergenes 873:to be the result of new 498:Evolutionary linguistics 493:Evolutionary game theory 468:Evolutionary computation 3964:Dual inheritance theory 3803:History of paleontology 2727:Guide to reptile morphs 2548:The American Naturalist 1932:Genetics of Populations 1436:And in the laboratory: 1270:The white morph of the 1082:transient polymorphisms 891:ecological genetics by 611:Objections to evolution 518:Evolutionary psychology 513:Evolutionary physiology 458:Evolutionary aesthetics 437:Fields and applications 419:History of paleontology 4365:Polymorphism (biology) 3652:Punctuated equilibrium 2973:Non-adaptive radiation 2921:Evolutionary arms race 2741:McNamara, Don (1998). 2460:10.1006/anbe.1994.1053 2342:". In R. Creed (ed.), 2086:10.1002/jez.1400320206 1681:Dobzhansky, Theodosius 1486:evolutionary synthesis 1292:heterozygote advantage 1283: 1278:is partly a result of 1112:is fitter than either 1102:heterozygote advantage 923:taxonomic nomenclature 543:Speciation experiments 523:Experimental evolution 478:Evolutionary economics 300:Recent human evolution 158:Processes and outcomes 4325:Underwater camouflage 4104:Aggressive/Wicklerian 3944:Evolutionary medicine 3818:Mendelian inheritance 3526:Biological complexity 3514:Programmed cell death 3206:Phenotypic plasticity 2926:Evolutionary pressure 2916:Evidence of evolution 2814:Timeline of evolution 2617:Bowler, P. J. 2003. 1797:Evolutionary Genetics 1572:List of polymorphisms 1409:Investigative methods 1269: 1009:blue-tailed damselfly 987:intellectual property 856:allopatric speciation 503:Evolutionary medicine 448:Biosocial criminology 414:History of speciation 327:Evolutionary taxonomy 290:Timeline of evolution 4300:Evolutionary ecology 4285:Deception in animals 4279:Dazzled and Deceived 4239:Animal communication 3918:Teleology in biology 3813:Blending inheritance 3191:Genetic assimilation 3054:Artificial selection 2793:Evolutionary biology 2745:Callimorpha dominula 2668:Stebbins, G. Ledyard 2596:Bowler, P. J. 1983. 2375:10.1038/hdy.1990.110 2346:. Oxford: Blackwell. 2024:Genetics in Medicine 1906:Genetic Polymorphism 1666:Genetic polymorphism 1323:G. Evelyn Hutchinson 1174:or even on the same 1054:genetic polymorphism 1042:Genetic polymorphism 1002:Genetic polymorphism 751:to describe certain 749:molecular biologists 741:Genetic polymorphism 473:Evolutionary ecology 87:Evolutionary biology 30:For other uses, see 4146:Emsleyan/Mertensian 3981:Molecular evolution 3939:Ecological genetics 3808:Transitional fossil 3598:Sexual reproduction 3438:endomembrane system 3367:pollinator-mediated 3323:dolphins and whales 3101:Parental investment 2642:. Oxford: Blackwell 2305:1929Natur.124..183D 2237:1975JThBi..55..325C 2191:1975JThBi..55..305C 2145:1975JThBi..55..283C 2078:1921JEZ....32..333D 1762:The New Systematics 1735:Sheppard, Philip M. 1720:Ecological Genetics 1560:molecular evolution 1542:Ecological Genetics 1490:evolutionary theory 1478:ecological genetics 1304:Apostatic selection 1280:apostatic selection 1217:in butterflies and 1104:): "Heterosis: the 1086:balancing selection 801:and is modified by 575:Social implications 563:Universal Darwinism 553:Island biogeography 488:Evolutionary ethics 453:Ecological genetics 399:Molecular evolution 337:Transitional fossil 165:Population genetics 81:Part of a series on 4290:Deimatic behaviour 3954:Cultural evolution 3069:Fisher's principle 2998:Handicap principle 2988:Parallel evolution 2852:Adaptive radiation 2287:Diver, C. (1929). 1884:Endler J.A. 1986. 1828:10.1038/hdy.1955.1 1768:pp. 493–513. 1718:Ford, E. B. 1975. 1284: 1256:going back to the 1028:Relative frequency 951:botanical taxonomy 897:John Maynard Smith 606:Theistic evolution 538:Selective breeding 250:Parallel evolution 215:Adaptive radiation 4352: 4351: 4320:Signalling theory 4295:Mimicry#Evolution 4268:Community ecology 4263:Animal coloration 4109:Ant/Myrmecomorphy 4054: 4053: 3670:Uniformitarianism 3623:Sex-determination 3128:Sexual dimorphism 3123:Natural selection 3027:Unit of selection 2993:Signalling theory 2104:Allen & Unwin 2102:, p. 36. London: 2100:Chromosome Botany 2011:978-1-4051-1117-1 1988:978-0-8153-4219-9 1969:978-0-486-40693-0 1942:978-0-7637-5737-3 1918:Faber & Faber 1775:978-1-930723-72-6 1494:natural selection 1488:, and on present 1288:effective fitness 1252:could be seen in 1048:Gene polymorphism 916:Phenotypic traits 803:natural selection 780:sexual dimorphism 772:genetic variation 692: 691: 383:Origin of Species 185:Natural selection 16:(Redirected from 4377: 4344:Category mimicry 4342: 4341: 4183: 4081: 4074: 4067: 4058: 4044: 4034: 4033: 3833:Modern synthesis 3593:Multicellularity 3588:Mosaic evolution 3473:auditory ossicle 3155:Social selection 3138:Flowering plants 3133:Sexual selection 2786: 2779: 2772: 2763: 2758: 2756: 2754: 2714: 2709:Kimura M. 1983. 2707: 2701: 2694: 2688: 2681: 2675: 2665: 2659: 2649: 2643: 2636: 2630: 2615: 2609: 2606:Johns Hopkins U. 2594: 2588: 2587: 2543: 2537: 2536: 2526: 2501:(8): 1131–1140. 2486: 2480: 2479: 2448:Animal Behaviour 2442: 2436: 2435: 2404:Animal Behaviour 2399: 2393: 2386: 2380: 2379: 2377: 2353: 2347: 2333: 2327: 2326: 2316: 2314:10.1038/124183a0 2284: 2278: 2271: 2265: 2264: 2218: 2172: 2126: 2120: 2113: 2107: 2096: 2090: 2089: 2057: 2051: 2044: 2038: 2037: 2019: 2013: 1999: 1990: 1980: 1974: 1973: 1953: 1947: 1946: 1926: 1920: 1902: 1889: 1882: 1876: 1875: 1839: 1833: 1832: 1830: 1806: 1800: 1793: 1780: 1779: 1753: 1742: 1732: 1723: 1716: 1695: 1678: 1669: 1659: 1650: 1635: 1607: 1602: 1601: 1600: 1593: 1588: 1587: 1466:Batesian mimicry 1443:population cages 1390:, the males are 1347:Papilio dardanus 1332:Papilio dardanus 1254:prefossil shells 1250:Cepaea nemoralis 1215:Batesian mimicry 1146:of an organism ( 1013:Ischnura elegans 816:. For example, 684: 677: 670: 657: 652: 651: 644: 640: 639: 616:Level of support 409:Current research 394:Modern synthesis 389:Before synthesis 342:Extinction event 100:Darwin's finches 97: 78: 64: 47: 21: 4385: 4384: 4380: 4379: 4378: 4376: 4375: 4374: 4355: 4354: 4353: 4348: 4329: 4222: 4184: 4175: 4090: 4085: 4055: 4050: 4022: 3949:Group selection 3922: 3847: 3751: 3678: 3640:Tempo and modes 3634: 3489: 3393: 3210: 3169: 3045: 3038: 3015:Species complex 2828: 2819:History of life 2795: 2790: 2752: 2750: 2740: 2723: 2718: 2717: 2708: 2704: 2695: 2691: 2682: 2678: 2666: 2662: 2651:Mayr, E. 1963. 2650: 2646: 2637: 2633: 2616: 2612: 2595: 2591: 2545: 2544: 2540: 2488: 2487: 2483: 2444: 2443: 2439: 2401: 2400: 2396: 2387: 2383: 2355: 2354: 2350: 2336:Cain, Arthur J. 2334: 2330: 2286: 2285: 2281: 2272: 2268: 2220: 2219: 2174: 2173: 2128: 2127: 2123: 2114: 2110: 2097: 2093: 2059: 2058: 2054: 2050:. Chicago. p197 2046:Sober E. 1984. 2045: 2041: 2034: 2021: 2020: 2016: 2000: 1993: 1981: 1977: 1970: 1955: 1954: 1950: 1943: 1928: 1927: 1923: 1903: 1892: 1883: 1879: 1841: 1840: 1836: 1808: 1807: 1803: 1794: 1783: 1776: 1755: 1754: 1745: 1733: 1726: 1717: 1698: 1693:Columbia U. Pr. 1679: 1672: 1660: 1653: 1636: 1632: 1627: 1603: 1598: 1596: 1589: 1582: 1579: 1574: 1568: 1530:Philip Sheppard 1474: 1411: 1360: 1341: 1320: 1245: 1187: 1161: 1140: 1094: 1050: 1044: 1039: 1030: 995: 888: 839: 688: 647: 634: 633: 626: 625: 576: 568: 567: 438: 430: 429: 428: 356: 348: 347: 346: 295:Human evolution 285:History of life 269: 268:Natural history 261: 260: 259: 159: 151: 106: 76: 75: 74: 73: 72: 65: 56: 55: 54: 48: 35: 28: 23: 22: 15: 12: 11: 5: 4383: 4381: 4373: 4372: 4367: 4357: 4356: 4350: 4349: 4347: 4346: 4334: 4331: 4330: 4328: 4327: 4322: 4317: 4312: 4307: 4302: 4297: 4292: 4287: 4282: 4275: 4270: 4265: 4260: 4255: 4246: 4241: 4236: 4230: 4228: 4227:Related topics 4224: 4223: 4221: 4220: 4215: 4210: 4205: 4200: 4194: 4192: 4186: 4185: 4178: 4176: 4174: 4173: 4168: 4166:In vertebrates 4163: 4158: 4153: 4148: 4143: 4138: 4133: 4132: 4131: 4121: 4116: 4111: 4106: 4100: 4098: 4092: 4091: 4086: 4084: 4083: 4076: 4069: 4061: 4052: 4051: 4049: 4048: 4038: 4027: 4024: 4023: 4021: 4020: 4015: 4010: 4005: 4000: 3999: 3998: 3988: 3983: 3978: 3973: 3968: 3967: 3966: 3961: 3956: 3946: 3941: 3936: 3930: 3928: 3924: 3923: 3921: 3920: 3915: 3914: 3913: 3908: 3903: 3902: 3901: 3891: 3886: 3881: 3876: 3871: 3861: 3855: 3853: 3849: 3848: 3846: 3845: 3840: 3835: 3830: 3825: 3820: 3815: 3810: 3805: 3800: 3799: 3798: 3789:Charles Darwin 3786: 3785: 3784: 3772: 3767: 3761: 3759: 3753: 3752: 3750: 3749: 3744: 3739: 3734: 3729: 3727:Non-ecological 3724: 3719: 3714: 3709: 3704: 3699: 3694: 3688: 3686: 3680: 3679: 3677: 3676: 3667: 3658: 3644: 3642: 3636: 3635: 3633: 3632: 3627: 3626: 3625: 3620: 3615: 3610: 3605: 3595: 3590: 3585: 3580: 3575: 3570: 3565: 3560: 3555: 3550: 3545: 3544: 3543: 3533: 3528: 3523: 3518: 3517: 3516: 3511: 3500: 3498: 3491: 3490: 3488: 3487: 3486: 3485: 3480: 3478:nervous system 3475: 3470: 3465: 3457: 3456: 3455: 3450: 3445: 3440: 3435: 3430: 3420: 3415: 3410: 3404: 3402: 3395: 3394: 3392: 3391: 3386: 3381: 3376: 3371: 3370: 3369: 3359: 3358: 3357: 3352: 3351: 3350: 3345: 3335: 3330: 3325: 3320: 3315: 3314: 3313: 3308: 3298: 3288: 3283: 3282: 3281: 3271: 3266: 3261: 3256: 3255: 3254: 3244: 3239: 3238: 3237: 3227: 3221: 3219: 3212: 3211: 3209: 3208: 3203: 3198: 3193: 3188: 3183: 3177: 3175: 3171: 3170: 3168: 3167: 3162: 3157: 3152: 3151: 3150: 3145: 3140: 3130: 3125: 3120: 3115: 3110: 3109: 3108: 3103: 3093: 3088: 3083: 3082: 3081: 3071: 3066: 3061: 3056: 3050: 3048: 3040: 3039: 3037: 3036: 3035: 3034: 3024: 3019: 3018: 3017: 3012: 3002: 3001: 3000: 2990: 2985: 2980: 2978:Origin of life 2975: 2970: 2965: 2963:Microevolution 2960: 2958:Macroevolution 2955: 2950: 2945: 2944: 2943: 2933: 2928: 2923: 2918: 2913: 2908: 2903: 2898: 2896:Common descent 2893: 2892: 2891: 2881: 2876: 2874:Baldwin effect 2871: 2870: 2869: 2864: 2854: 2849: 2844: 2838: 2836: 2830: 2829: 2827: 2826: 2821: 2816: 2811: 2806: 2800: 2797: 2796: 2791: 2789: 2788: 2781: 2774: 2766: 2760: 2759: 2738: 2729: 2722: 2721:External links 2719: 2716: 2715: 2702: 2689: 2676: 2660: 2657:Harvard U. Pr. 2644: 2631: 2610: 2589: 2560:10.1086/598491 2554:(6): 709–721. 2538: 2481: 2454:(2): 389–397. 2437: 2394: 2381: 2368:(3): 401–406. 2348: 2328: 2279: 2266: 2231:(2): 325–337. 2185:(2): 305–324. 2139:(2): 283–303. 2121: 2108: 2091: 2052: 2039: 2032: 2014: 1991: 1975: 1968: 1948: 1941: 1921: 1890: 1877: 1856:10.1086/429566 1850:(6): 669–681. 1834: 1801: 1781: 1774: 1743: 1724: 1696: 1670: 1651: 1629: 1628: 1626: 1623: 1622: 1621: 1615: 1609: 1608: 1605:Ecology portal 1594: 1578: 1575: 1570:Main article: 1567: 1564: 1473: 1470: 1461: 1460: 1457:chromatography 1453: 1444: 1441: 1434: 1433: 1430: 1427: 1421: 1418: 1410: 1407: 1359: 1356: 1339: 1319: 1316: 1244: 1241: 1186: 1183: 1160: 1157: 1156: 1155: 1139: 1136: 1135: 1134: 1130: 1127: 1124:prey switching 1117: 1093: 1090: 1063: 1062: 1046:Main article: 1043: 1040: 1038: 1035: 1029: 1026: 1025: 1024: 1021: 1018: 1017: 1016: 994: 991: 973:("variety" in 887: 884: 883: 882: 870: 863: 851: 838: 835: 690: 689: 687: 686: 679: 672: 664: 661: 660: 659: 658: 645: 628: 627: 624: 623: 618: 613: 608: 603: 598: 596:Social effects 593: 588: 583: 577: 574: 573: 570: 569: 566: 565: 560: 555: 550: 545: 540: 535: 530: 525: 520: 515: 510: 505: 500: 495: 490: 485: 480: 475: 470: 465: 460: 455: 450: 445: 439: 436: 435: 432: 431: 427: 426: 416: 411: 406: 401: 396: 391: 386: 379: 374: 369: 364: 358: 357: 354: 353: 350: 349: 345: 344: 339: 334: 329: 324: 322:Classification 319: 314: 309: 304: 303: 302: 292: 287: 282: 280:Common descent 277: 275:Origin of life 271: 270: 267: 266: 263: 262: 258: 257: 252: 247: 242: 237: 232: 227: 222: 217: 212: 207: 202: 197: 192: 187: 182: 177: 172: 167: 161: 160: 157: 156: 153: 152: 150: 149: 144: 139: 133: 132: 127: 122: 117: 111: 108: 107: 98: 90: 89: 83: 82: 67:Dark-morph or 66: 59: 58: 57: 49: 42: 41: 40: 39: 38: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4382: 4371: 4368: 4366: 4363: 4362: 4360: 4345: 4336: 4335: 4332: 4326: 4323: 4321: 4318: 4316: 4313: 4311: 4308: 4306: 4303: 4301: 4298: 4296: 4293: 4291: 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3850: 3844: 3841: 3839: 3836: 3834: 3831: 3829: 3828:Neo-Darwinism 3826: 3824: 3821: 3819: 3816: 3814: 3811: 3809: 3806: 3804: 3801: 3797: 3796: 3792: 3791: 3790: 3787: 3783: 3782: 3778: 3777: 3776: 3773: 3771: 3768: 3766: 3763: 3762: 3760: 3758: 3754: 3748: 3745: 3743: 3742:Reinforcement 3740: 3738: 3735: 3733: 3730: 3728: 3725: 3723: 3720: 3718: 3715: 3713: 3710: 3708: 3705: 3703: 3700: 3698: 3695: 3693: 3690: 3689: 3687: 3685: 3681: 3675: 3674:Catastrophism 3671: 3668: 3666: 3665:Macromutation 3662: 3661:Micromutation 3659: 3657: 3653: 3649: 3646: 3645: 3643: 3641: 3637: 3631: 3628: 3624: 3621: 3619: 3616: 3614: 3611: 3609: 3606: 3604: 3601: 3600: 3599: 3596: 3594: 3591: 3589: 3586: 3584: 3581: 3579: 3576: 3574: 3571: 3569: 3568:Immune system 3566: 3564: 3561: 3559: 3556: 3554: 3551: 3549: 3546: 3542: 3539: 3538: 3537: 3534: 3532: 3529: 3527: 3524: 3522: 3519: 3515: 3512: 3510: 3507: 3506: 3505: 3502: 3501: 3499: 3497: 3492: 3484: 3481: 3479: 3476: 3474: 3471: 3469: 3466: 3464: 3461: 3460: 3458: 3454: 3451: 3449: 3446: 3444: 3441: 3439: 3436: 3434: 3431: 3429: 3428:symbiogenesis 3426: 3425: 3424: 3421: 3419: 3416: 3414: 3411: 3409: 3406: 3405: 3403: 3401: 3396: 3390: 3387: 3385: 3382: 3380: 3377: 3375: 3372: 3368: 3365: 3364: 3363: 3360: 3356: 3353: 3349: 3346: 3344: 3341: 3340: 3339: 3336: 3334: 3331: 3329: 3326: 3324: 3321: 3319: 3316: 3312: 3309: 3307: 3304: 3303: 3302: 3299: 3297: 3294: 3293: 3292: 3289: 3287: 3284: 3280: 3277: 3276: 3275: 3272: 3270: 3267: 3265: 3262: 3260: 3257: 3253: 3250: 3249: 3248: 3245: 3243: 3240: 3236: 3233: 3232: 3231: 3228: 3226: 3223: 3222: 3220: 3218: 3213: 3207: 3204: 3202: 3199: 3197: 3194: 3192: 3189: 3187: 3184: 3182: 3179: 3178: 3176: 3172: 3166: 3163: 3161: 3158: 3156: 3153: 3149: 3146: 3144: 3141: 3139: 3136: 3135: 3134: 3131: 3129: 3126: 3124: 3121: 3119: 3116: 3114: 3111: 3107: 3104: 3102: 3099: 3098: 3097: 3096:Kin selection 3094: 3092: 3091:Genetic drift 3089: 3087: 3084: 3080: 3077: 3076: 3075: 3072: 3070: 3067: 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1293: 1289: 1281: 1277: 1273: 1268: 1264: 1262: 1259: 1255: 1251: 1242: 1240: 1238: 1233: 1229: 1227: 1222: 1220: 1216: 1212: 1208: 1204: 1200: 1196: 1192: 1184: 1182: 1179: 1177: 1173: 1169: 1165: 1158: 1153: 1152: 1151: 1149: 1145: 1137: 1131: 1128: 1125: 1121: 1118: 1115: 1111: 1107: 1103: 1099: 1096: 1095: 1091: 1089: 1087: 1083: 1078: 1076: 1070: 1068: 1059: 1058: 1057: 1055: 1049: 1041: 1036: 1034: 1027: 1022: 1019: 1014: 1010: 1006: 1005: 1003: 1000: 999: 998: 992: 990: 988: 984: 983:plant variety 980: 976: 972: 968: 964: 960: 956: 952: 948: 944: 940: 936: 932: 928: 924: 919: 917: 913: 909: 904: 902: 901:Julian Huxley 898: 894: 885: 880: 876: 871: 868: 864: 861: 857: 852: 850:or polymodal. 849: 844: 843: 842: 836: 834: 831: 829: 825: 821: 820: 815: 811: 806: 804: 800: 795: 793: 789: 786:), and human 785: 781: 777: 773: 769: 764: 762: 758: 754: 750: 746: 742: 738: 734: 729: 725: 723: 719: 715: 714: 709: 705: 701: 697: 685: 680: 678: 673: 671: 666: 665: 663: 662: 656: 646: 643: 638: 632: 631: 630: 629: 622: 619: 617: 614: 612: 609: 607: 604: 602: 599: 597: 594: 592: 589: 587: 584: 582: 579: 578: 572: 571: 564: 561: 559: 556: 554: 551: 549: 546: 544: 541: 539: 536: 534: 531: 529: 528:Phylogenetics 526: 524: 521: 519: 516: 514: 511: 509: 506: 504: 501: 499: 496: 494: 491: 489: 486: 484: 481: 479: 476: 474: 471: 469: 466: 464: 461: 459: 456: 454: 451: 449: 446: 444: 441: 440: 434: 433: 424: 420: 417: 415: 412: 410: 407: 405: 402: 400: 397: 395: 392: 390: 387: 385: 384: 380: 378: 375: 373: 372:Before Darwin 370: 368: 365: 363: 360: 359: 352: 351: 343: 340: 338: 335: 333: 330: 328: 325: 323: 320: 318: 315: 313: 310: 308: 305: 301: 298: 297: 296: 293: 291: 288: 286: 283: 281: 278: 276: 273: 272: 265: 264: 256: 253: 251: 248: 246: 243: 241: 238: 236: 233: 231: 228: 226: 223: 221: 218: 216: 213: 211: 208: 206: 203: 201: 200:Genetic drift 198: 196: 193: 191: 188: 186: 183: 181: 178: 176: 173: 171: 168: 166: 163: 162: 155: 154: 148: 145: 143: 140: 138: 135: 134: 131: 128: 126: 123: 121: 118: 116: 113: 112: 110: 109: 105: 101: 96: 92: 91: 88: 84: 80: 79: 70: 63: 53: 46: 37: 33: 19: 4315:Polymorphism 4314: 4310:Phagomimicry 4277: 4258:Co-evolution 4003:Polymorphism 4002: 3986:Astrobiology 3934:Biogeography 3889:Saltationism 3879:Orthogenesis 3864:Alternatives 3793: 3779: 3712:Cospeciation 3707:Cladogenesis 3656:Saltationism 3613:Mating types 3536:Color vision 3521:Avian flight 3443:mitochondria 3181:Canalisation 3059:Biodiversity 2804:Introduction 2751:. Retrieved 2744: 2733: 2713:. Cambridge. 2710: 2705: 2697: 2692: 2684: 2679: 2671: 2663: 2652: 2647: 2639: 2634: 2618: 2613: 2597: 2592: 2551: 2547: 2541: 2498: 2494: 2484: 2451: 2447: 2440: 2407: 2403: 2397: 2389: 2384: 2365: 2361: 2351: 2343: 2339: 2331: 2296: 2292: 2282: 2274: 2269: 2228: 2222: 2182: 2176: 2136: 2130: 2124: 2116: 2111: 2099: 2094: 2069: 2065: 2055: 2047: 2042: 2023: 2017: 2002: 1978: 1958: 1951: 1931: 1924: 1905: 1885: 1880: 1847: 1843: 1837: 1818: 1814: 1804: 1796: 1761: 1738: 1719: 1684: 1665: 1646: 1645:= many, and 1642: 1633: 1554: 1541: 1537: 1534:Cyril Clarke 1523: 1500:'s ideas on 1475: 1462: 1435: 1412: 1404: 1363: 1361: 1350: 1346: 1344: 1338: 1337: 1330: 1321: 1308: 1285: 1249: 1246: 1236: 1234: 1230: 1223: 1209:on a single 1207:linked genes 1197:(e.g. human 1193:at a single 1188: 1180: 1162: 1148:pleiotropism 1141: 1138:Pleiotropism 1106:heterozygote 1081: 1079: 1071: 1064: 1053: 1051: 1031: 1012: 996: 975:viticultural 939:ring species 920: 905: 889: 886:Nomenclature 862:populations. 840: 832: 824:gastrozooids 817: 807: 796: 768:biodiversity 765: 730: 726: 711: 707: 703: 700:polymorphism 699: 693: 548:Sociobiology 533:Paleontology 381: 317:Biogeography 312:Biodiversity 230:Coextinction 220:Co-operation 195:Polymorphism 194: 120:Introduction 50:Light-morph 36: 32:Polymorphism 4244:Aposematism 4119:Automimicry 4013:Systematics 3884:Mutationism 3702:Catagenesis 3630:Snake venom 3563:Eusociality 3541:in primates 3531:Cooperation 3459:In animals 3279:butterflies 3252:Cephalopods 3242:Brachiopods 3174:Development 3148:Mate choice 2901:Convergence 2884:Coevolution 2842:Abiogenesis 2410:: 660–665. 1821:(1): 1–52. 1526:Arthur Cain 1452:if possible 1400:polyphenism 1372:Hymenoptera 1351:P. dardanus 1226:gene family 1219:heterostyly 867:blood types 837:Terminology 792:blood types 745:geneticists 733:polyphenism 558:Systematics 367:Renaissance 245:Convergence 235:Contingency 225:Coevolution 4359:Categories 4249:Camouflage 4218:Vavilovian 4208:Gilbertian 4171:Wasmannian 4096:In animals 3874:Lamarckism 3852:Philosophy 3775:David Hume 3737:Peripatric 3732:Parapatric 3717:Ecological 3697:Anagenesis 3692:Allopatric 3684:Speciation 3648:Gradualism 3573:Metabolism 3433:chromosome 3423:Eukaryotes 3201:Modularity 3118:Population 3044:Population 3005:Speciation 2983:Panspermia 2936:Extinction 2931:Exaptation 2906:Divergence 2879:Cladistics 2867:Reciprocal 2847:Adaptation 2655:. Boston: 1912:/London.: 1764:. Oxford: 1625:References 1550:Dobzhansky 1447:chromosome 1396:alligators 1358:The switch 1312:speciation 1258:Mesolithic 1224:Whereas a 1211:chromosome 1203:supergenes 1176:chromosome 1114:homozygote 993:Mechanisms 959:subvariety 943:subspecies 814:cnidarians 788:hemoglobin 776:adaptation 718:population 713:phenotypes 332:Cladistics 255:Extinction 240:Divergence 210:Speciation 190:Adaptation 104:John Gould 69:melanistic 18:Morphotype 4203:Dodsonian 4190:In plants 4156:Müllerian 4129:Locomotor 4008:Protocell 3859:Darwinism 3747:Sympatric 3496:processes 3384:Tetrapods 3333:Kangaroos 3259:Dinosaurs 3196:Inversion 3165:Variation 3086:Gene flow 3079:Inclusive 2889:Mutualism 2834:Evolution 2753:15 August 2602:Baltimore 2568:0003-0147 2515:0340-5443 2468:0003-3472 2424:0003-3472 2253:0022-5193 2207:0022-5193 2161:0022-5193 1662:Ford E.B. 1164:Epistasis 1159:Epistasis 1144:phenotype 1098:Heterosis 979:gardening 935:trinomial 893:E.B. Ford 875:mutations 860:panmictic 799:heritable 753:mutations 731:The term 722:panmictic 716:, in the 591:Dysgenics 307:Phylogeny 205:Gene flow 175:Diversity 170:Variation 4198:Bakerian 4141:Chemical 4124:Batesian 4036:Category 3911:Vitalism 3906:Theistic 3899:Spandrel 3583:Morality 3578:Monogamy 3453:plastids 3418:Flagella 3374:Reptiles 3355:sea cows 3338:primates 3247:Molluscs 3225:Bacteria 3113:Mutation 3046:genetics 3022:Taxonomy 2968:Mismatch 2948:Homology 2862:Cheating 2857:Altruism 2623:Berkeley 2584:35052139 2576:19382852 2533:25544799 2476:53186308 2432:53159705 2362:Heredity 1864:15937747 1815:Heredity 1689:New York 1683:. 1970. 1577:See also 1566:Examples 1546:Stebbins 1513:such as 1450:cytology 1261:Holocene 1067:sympatry 1037:Genetics 971:cultivar 931:binomial 903:(1955). 854:lead to 737:genotype 655:Category 581:Eugenics 423:timeline 404:Evo-devo 362:Overview 180:Mutation 142:Evidence 137:Glossary 4370:Morphas 4253:Crypsis 4151:Eyespot 4088:Mimicry 3927:Related 3757:History 3618:Meiosis 3553:Empathy 3548:Emotion 3448:nucleus 3389:Viruses 3379:Spiders 3291:Mammals 3274:Insects 3074:Fitness 3010:Species 2809:Outline 2524:4276144 2323:4067174 2301:Bibcode 2261:1207162 2233:Bibcode 2215:1207161 2187:Bibcode 2169:1207160 2141:Bibcode 2074:Bibcode 1914:MIT Pr. 1872:8062017 1760:(ed.). 1515:Haldane 1482:mimicry 1455:use of 1392:haploid 1388:diploid 1327:mimicry 1298:at the 1296:alleles 1272:monarch 1243:Ecology 1237:in situ 1191:alleles 961:" and " 955:variety 927:zoology 921:In the 848:bimodal 828:medusae 784:mimicry 696:biology 147:History 130:Outline 4337:  4161:Sexual 4046:Portal 3722:Hybrid 3558:Ethics 3400:organs 3362:Plants 3348:lemurs 3343:humans 3328:horses 3318:hyenas 3306:wolves 3301:canids 3235:origin 2670:1950. 2582:  2574:  2566:  2531:  2521:  2513:  2474:  2466:  2430:  2422:  2340:Cepaea 2321:  2293:Nature 2259:  2251:  2213:  2205:  2167:  2159:  2030:  2009:  1986:  1966:  1939:  1910:Boston 1870:  1862:  1844:Am Nat 1772:  1737:1975. 1664:1965. 1556:Kimura 1519:Fisher 1506:Kimura 1364:switch 1276:Hawaii 1172:linked 912:"form" 879:allele 819:Obelia 810:zooids 774:, and 704:morphs 653:  377:Darwin 52:jaguar 4136:Brood 3509:Death 3504:Aging 3483:brain 3269:Fungi 3230:Birds 3143:Fungi 2941:Event 2824:Index 2747:(L.)" 2580:S2CID 2472:S2CID 2428:S2CID 2319:S2CID 1868:S2CID 1647:μορφή 1639:Greek 1620:(SNP) 1502:drift 1384:wasps 1370:. In 1300:locus 1195:locus 1168:locus 1110:locus 1108:at a 949:. 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Index

Morphotype
Polymorphism

jaguar

melanistic
Evolutionary biology

Darwin's finches
John Gould
Index
Introduction
Main
Outline
Glossary
Evidence
History
Population genetics
Variation
Diversity
Mutation
Natural selection
Adaptation
Polymorphism
Genetic drift
Gene flow
Speciation
Adaptive radiation
Co-operation
Coevolution

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