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Recapitulation theory

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928: 947:(1831–1904), who had developed a rival "causal-mechanical theory" of human embryonic development. His's work specifically criticised Haeckel's methodology, arguing that the shapes of embryos were caused most immediately by mechanical pressures resulting from local differences in growth. These differences were, in turn, caused by "heredity". He compared the shapes of embryonic structures to those of rubber tubes that could be slit and bent, illustrating these comparisons with accurate drawings. 859:'s concepts. While often seen as rejecting Darwin's theory of branching evolution for a more linear Lamarckian view of progressive evolution, this is not accurate: Haeckel used the Lamarckian picture to describe the ontogenetic and phylogenetic history of individual species, but agreed with Darwin about the branching of all species from one, or a few, original ancestors. Since early in the twentieth century, Haeckel's "biogenetic law" has been refuted on many fronts. 54: 959: 609: 2298: 806: 596: 1584:, an interpretation of vertebrate embryonic development. After this publication His arrived at another interpretation of the development of embryos: the concrescence theory, which claimed that at the beginning of development only the simple form of the head lies in the embryonic disk and that the axial portions of the body emerge only later. 1995:
Bates 1979, Wynn 1979) ... Thus, one child, having been shown the moon, applied the word 'moon' to a variety of objects with similar shapes as well as to the moon itself (Bowerman 1980). This spatial globality of reference is consistent with the archaeological appearance of graphic abstraction before graphic realism.
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RĂĽtimeyer's ex-colleague, Wilhelm His, who had developed a rival, physiological embryology, which looked, not to the evolutionary past, but to bending and folding forces in the present. He now repeated and amplified the charges, and lay enemies used them to discredit the most prominent Darwinist. But
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The present interdisciplinary article offers cogent reasons why the biogenetic rule has no relevance for behavioral ontogeny. ... In contrast to anatomical ontogeny, in the case of behavioral ontogeny there are no empirical indications of 'behavioral interphenes, that developed phylogenetically from
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While ontogeny does not generally recapitulate phylogeny in any direct sense (Gould 1977), both biological evolution and the stages in the child's cognitive development follow much the same progression of evolutionary stages as that suggested in the archaeological record (Borchert and Zihlman 1990,
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Its shortcomings have been almost universally pointed out by modern authors, but the idea still has a prominent place in biological mythology. The resemblance of early vertebrate embryos is readily explained without resort to mysterious forces compelling each individual to reclimb its phylogenetic
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Embryos do reflect the course of evolution, but that course is far more intricate and quirky than Haeckel claimed. Different parts of the same embryo can even evolve in different directions. As a result, the Biogenetic Law was abandoned, and its fall freed scientists to appreciate the full range of
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history of a species. Haeckel claimed that the development of advanced species passes through stages represented by adult organisms of more primitive species. Otherwise put, each successive stage in the development of an individual represents one of the adult forms that appeared in its evolutionary
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Darwin proposed that embryos resembled each other since they shared a common ancestor, which presumably had a similar embryo, but that development did not necessarily recapitulate phylogeny: he saw no reason to suppose that an embryo at any stage resembled an adult of any ancestor. Darwin supposed
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In the late 20th century, studies of symbolism and learning in the field of cultural anthropology suggested that "both biological evolution and the stages in the child's cognitive development follow much the same progression of evolutionary stages as that suggested in the archaeological record".
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in the neck of the human embryo not only roughly resembled gill slits of fish, but directly represented an adult "fishlike" developmental stage, signifying a fishlike ancestor. Embryonic pharyngeal slits, which form in many animals when the thin branchial plates separating pharyngeal pouches and
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used Haeckel's theories as the basis for his theories of child development. His most influential work, "Adolescence: Its Psychology and Its Relations to Physiology, Anthropology, Sociology, Sex, Crime, Religion and Education" in 1904 suggested that each individual's life course recapitulated
999:) within the body of aspects of embryonic development would change the shape of a descendant's body compared to an ancestor's, were first formulated by Haeckel in the 1870s. These elements of his thinking about development have thus survived, whereas his theory of recapitulation has not. 1602:: "Haeckel sensed correctly that His was a far more serious competitor than his empirical critics... His would have substituted a drastically different approach and relegated the biogenetic law to irrelevancy—a fate far worse and far more irrevocable than any odor of inaccuracy." 918:
that often overemphasized similarities between embryos of related species. Modern biology rejects the literal and universal form of Haeckel's theory, such as its possible application to behavioural ontogeny, i.e. the psychomotor development of young animals and human children.
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Faulty logic and problematic proposals relating the development of an individual to the development of the species turn up even today. The hypothesis that ontogeny recapitulates phylogeny has been applied and extended in a number of areas, including cognition and mental
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message does, in fact, inform the work's identity (its ontology), even though that was an unlikely concern of the composer. Music or even an abstract visual artwork can not be truly autonomous ("absolute") because it is defined by its historical and social reception.
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where their morphology is strongly shaped by their phylogenetic position, rather than selective pressures, but that means only that they resemble other embryos at that stage, not ancestral adults as Haeckel had claimed. The modern view is summarised by the
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If there be an order in which the human race has mastered its various kinds of knowledge, there will arise in every child an aptitude to acquire these kinds of knowledge in the same order... Education is a repetition of civilization in
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was one of the most energetic proponents of evolutionary ideas to explain many phenomena. In 1861, five years before Haeckel first published on the subject, Spencer proposed a possible basis for a cultural recapitulation theory of
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in 2005 applied the phrase "ontogeny becomes phylogeny" to the process of creating and recasting music history, often to assert a perspective or argument. For example, the peculiar development of the works by modernist composer
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The so-called basic law of biogenetics is wrong. No buts or ifs can mitigate this fact. It is not even a tiny bit correct or correct in a different form, making it valid in a certain percentage. It is totally
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humanity's evolution from "savagery" to "civilization". Though he has influenced later childhood development theories, Hall's conception is now generally considered racist. Developmental psychologist
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outlook with justification from the recapitulation theory. Freud also distinguished between physical and mental recapitulation, in which the differences would become an essential argument for his
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that His's attack on Haeckel's recapitulation theory was far more fundamental than that of any empirical critic, as it effectively stated that Haeckel's "biogenetic law" was irrelevant.
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is the investigation of what exactly something is, and Taruskin asserts that an art object becomes that which society and succeeding generations made of it. For example,
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Haeckel argued that his figures were schematics, not intended to be exact. They stayed in his books and were widely copied, but still attract controversy today.
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The embryological theory was formalised by Serres in 1824–1826, based on Meckel's work, in what became known as the "Meckel-Serres Law". This attempted to link
2185:; Wright, Glenda M (1997). "There is no highly conserved embryonic stage in the vertebrates: Implications for current theories of evolution and development". 1121:
of the "collapse of traditional tonality" are faulted by music historians as asserting a rhetorical rather than historical point about tonality's "collapse".
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embryonic changes that evolution can produce—an appreciation that has yielded spectacular results in recent years as scientists have discovered some of the
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Haeckel formulated his theory as "Ontogeny recapitulates phylogeny". The notion later became simply known as the recapitulation theory.
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Taruskin also developed a variation of the motto into the pun "ontogeny recapitulates ontology" to refute the concept of "
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Adolescence: Its Psychology and Its Relations to Physiology, Anthropology, Sociology, Sex, Crime, Religion and Education
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Gerhard Medicus (2017, chapter 8). Being Human – Bridging the Gap between the Sciences of Body and Mind, Berlin VWB
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further that embryos were subject to less intense selection pressure than adults, and had therefore changed less.
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Kalinka, A. T.; Tomancak, P. (2012). "The evolution of early animal embryos: Conservation or divergence?".
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The Haeckelian form of recapitulation theory is considered defunct. Embryos do undergo a period or
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RICHARDSON, MICHAEL K.; KEUCK, GERHARD (2002). "Haeckel's ABC of evolution and development".
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of adult bodies. Two of the key principles of evo-devo, namely that changes in the timing (
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is the growth (size change) and development (structure change) of an individual organism;
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The tragic sense of life : Ernst Haeckel and the struggle over evolutionary thought
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Richardson, M. K; Hanken, James; Gooneratne, Mayoni L; Pieau, Claude; Raynaud, Albert;
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George Romanes's 1892 version of the figure is often attributed incorrectly to Haeckel.
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Of Parts and Wholes: Self-similarity and Synecdoche in Science, Culture and Literature
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The idea that ontogeny recapitulates phylogeny has been applied to some other areas.
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Bates, E., with L. Benigni, I. Bretherton, L. Camaioni, & V. Volterra. (1979).
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Analogies to recapitulation theory have been formulated in other fields, including
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Haeckel's theory and drawings were criticised by his contemporary, the anatomist
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The politics of evolution: morphology, medicine, and reform in radical London
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Lesko, Nancy (1996). "Past, Present, and Future Conceptions of Adolescence".
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with a "pattern of unification" in the organic world. It was supported by
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Drost, Hajk-Georg; Janitza, Philipp; Grosse, Ivo; Quint, Marcel (2017).
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Foster, Mary LeCron (1994). "Symbolism: the foundation of culture". In
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Hall, B. K. (2003). "Evo-Devo: evolutionary developmental mechanisms".
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phylogeny because the two are subject to similar external constraints.
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For example, Haeckel proposed that the pharyngeal grooves between the
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Wynn, Thomas (1979). "The Intelligence of Later Acheulean Hominids".
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favored a weaker version of the formula, according to which ontogeny
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Lovtrup, S (1978). "On von Baerian and Haeckelian Recapitulation".
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Eventually, the Biogenetic Law had become scientifically untenable.
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of chick brain compared to folded rubber tube, 1874. Ag (Anlage) =
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The emergence of symbols: Cognition and communication in infancy.
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The Educated Mind: How Cognitive Tools Shape Our Understanding
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Biological Reviews of the Cambridge Philosophical Society
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Borchert. Catherine M. and Zihlman, Adrienne L. (1990)
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styles of which Schoenberg is a representative. Such
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Division of Biology and Medicine, Brown University.
1154:. Taruskin claims the historical development of the 895:, the first pharyngeal arch develops into the lower 736:The idea of recapitulation was first formulated in 2090: 2064: 1146:, composed in the 1720s, was appropriated by the 841:(1834–1919) attempted to synthesize the ideas of 887:to the outside. Pharyngeal arches appear in all 759:states, it soon gained the status of a supposed 1048: 1013: 1009:University of California Museum of Paleontology 1835:Early Evolution and Development: Ernst Haeckel 1689:International Journal of Developmental Biology 1447: 1445: 2162:"Evolution and Development I: Size and shape" 1755:Current Opinion in Genetics & Development 634: 8: 1612:Ray, R. S.; Dymecki, S. M. (December 2009). 1224:; Holm, Richard W.; Parnell, Dennis (1963). 2005: 2003: 1868:. University of Chicago Press. p. 27. 834:Icons of Evolution § Haeckel's embryos 2042:Vico, metaphor, and the origin of language 641: 627: 36: 2223:The ontogeny and phylogeny of symbolizing 1766: 1637: 1542:"Making visible embryos: Forgery charges" 1265:. New York: Springer-Verlag. p. 32. 2097:. Chicago: University of Chicago Press. 2045:. Indiana University Press. p. 65. 1963: 1961: 804: 2293: 1352: 1213: 1194: 1018:specific genes that control development 883:pharyngeal grooves perforate, open the 673:"—is an historical hypothesis that the 44: 1986:Companion Encyclopedia of Anthropology 1454:"Ernst Haeckel and the Biogenetic Law" 1340: 693:). It was formulated in the 1820s by 1967: 1952: 1595: 1228:. New York: McGraw-Hill. p. 66. 740:from the 1790s onwards by the German 710:embryos also evolve in different ways 7: 1915:. New York: D. Appleton and Company. 1328: 2012:The Oxford History of Western Music 1570:. Embryo Project Encyclopedia. 2007 2334:Evolutionary developmental biology 1458:Developmental Biology, 8th edition 1298:Payne, D.G.; Wenger, M.J. (1998). 985:evolutionary developmental biology 32:Recapitulation theory of atonement 25: 2225:, in Foster and Botscharow (eds) 1792:Trends in Ecology & Evolution 1582:Ăśber die Bildung des Lachsembryos 1158:(its ontogeny) as a work with an 939:, matching bulges in rubber tube. 701:, after whom it is also known as 2296: 1940:10.1111/j.1741-5446.1996.00453.x 1355:, pp. 52–53, 86–88, 337–340 782:ideas led to disagreements with 671:ontogeny recapitulates phylogeny 608: 607: 594: 52: 30:For the Christian doctrine, see 2329:History of evolutionary biology 2117:The Quarterly Review of Biology 1667:The Embryo Project Encyclopedia 1618:Current Opinion in Cell Biology 601:Evolutionary biology portal 772:Étienne Geoffroy Saint-Hilaire 560:Creation–evolution controversy 314:History of evolutionary theory 1: 1416:Richards, Robert J. (2008). 1263:The beginnings of human life 1261:Blechschmidt, Erich (1977). 545:Evolution as fact and theory 1025:Applications to other areas 2350: 2010:Taruskin, Richard (2005). 1812:10.1016/j.tree.2012.03.007 1580:In 1874 His published his 827: 685:to gestation or hatching ( 580:Nature-nurture controversy 29: 2324:Obsolete biology theories 1909:Hall, G. Stanley (1904). 1768:10.1016/j.gde.2017.03.003 1630:10.1016/j.ceb.2009.10.003 1544:. University of Cambridge 1379:10.1017/s1464793102005948 1046:with the following claim: 914:Haeckel produced several 663:embryological parallelism 467:Evolutionary neuroscience 442:Evolutionary epistemology 422:Evolutionary anthropology 402:Applications of evolution 2237:New York: Academic Press 1481:Gerhard Medicus (1992). 1452:Scott F Gilbert (2006). 1226:The process of evolution 1150:regime in the 1930s for 1076:The Austrian pioneer of 749:Carl Friedrich Kielmeyer 732:Meckel, Serres, Geoffroy 655:theory of recapitulation 457:Evolutionary linguistics 452:Evolutionary game theory 427:Evolutionary computation 2039:Danesi, Marcel (1993). 962:Embryology theories of 951:noted in his 1977 book 745:Johann Friedrich Meckel 699:Johann Friedrich Meckel 665:—often expressed using 570:Objections to evolution 477:Evolutionary psychology 472:Evolutionary physiology 417:Evolutionary aesthetics 396:Fields and applications 378:History of paleontology 2187:Anatomy and Embryology 2067:Ontogeny and Phylogeny 1661:Barnes, M. Elizabeth. 1183:Psychomotor patterning 1059: 1022: 971: 953:Ontogeny and Phylogeny 940: 923:Contemporary criticism 820: 768:comparative embryology 502:Speciation experiments 482:Experimental evolution 437:Evolutionary economics 259:Recent human evolution 117:Processes and outcomes 2199:10.1007/s004290050082 1373:(4). Wiley: 495–528. 1138:Johann Sebastian Bach 1033:Cognitive development 961: 930: 828:Further information: 808: 790:, but was opposed by 717:cognitive development 697:based on the work of 462:Evolutionary medicine 407:Biosocial criminology 373:History of speciation 286:Evolutionary taxonomy 249:Timeline of evolution 27:Biological hypothesis 1460:. 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1855: 1852: 1842:on 2012-12-22 1841: 1837: 1836: 1829: 1826: 1821: 1817: 1813: 1809: 1805: 1801: 1797: 1793: 1786: 1783: 1778: 1774: 1769: 1764: 1760: 1756: 1752: 1745: 1742: 1737: 1733: 1729: 1725: 1721: 1717: 1710: 1707: 1702: 1698: 1694: 1690: 1683: 1680: 1668: 1664: 1657: 1654: 1649: 1645: 1640: 1635: 1631: 1627: 1623: 1619: 1615: 1608: 1605: 1601: 1597: 1592: 1589: 1585: 1583: 1569: 1563: 1560: 1556: 1543: 1537: 1534: 1530: 1519:on 2018-02-09 1515: 1511: 1507: 1503: 1499: 1495: 1491: 1484: 1477: 1474: 1470: 1459: 1455: 1448: 1446: 1442: 1437: 1433: 1429: 1423: 1419: 1412: 1409: 1404: 1400: 1396: 1392: 1388: 1384: 1380: 1376: 1372: 1368: 1361: 1358: 1354: 1349: 1346: 1343:, p. 65) 1342: 1336: 1333: 1330: 1325: 1322: 1318: 1313: 1307: 1303: 1302: 1294: 1291: 1287: 1282: 1278: 1274: 1272:0-387-90249-X 1268: 1264: 1257: 1254: 1250: 1245: 1241: 1237: 1235:0-07-019130-1 1231: 1227: 1223: 1217: 1214: 1208: 1198: 1195: 1188: 1184: 1181: 1179: 1176: 1174: 1171: 1170: 1166: 1164: 1161: 1157: 1153: 1149: 1145: 1144: 1139: 1135: 1131: 1130:Carl Dahlhaus 1127: 1122: 1120: 1116: 1112: 1107: 1099: 1097: 1093: 1091: 1087: 1083: 1082:Sigmund Freud 1079: 1074: 1072: 1068: 1063: 1052: 1047: 1045: 1040: 1032: 1030: 1024: 1021: 1019: 1012: 1010: 1005: 1000: 998: 994: 990: 986: 979:Modern status 978: 976: 969: 965: 964:Ernst Haeckel 960: 956: 954: 950: 946: 938: 934: 929: 922: 920: 917: 912: 910: 906: 902: 898: 894: 890: 886: 881: 876: 873: 869: 865: 860: 858: 854: 853: 848: 844: 840: 839:Ernst Haeckel 835: 831: 823: 819: 815: 814:Ernst Haeckel 811: 807: 803: 801: 797: 793: 789: 785: 781: 777: 773: 769: 764: 762: 758: 757:Marcel Danesi 755:after which, 754: 750: 746: 743: 739: 731: 726: 724: 722: 718: 713: 711: 706: 704: 700: 696: 692: 688: 684: 683:fertilization 680: 676: 672: 668: 667:Ernst Haeckel 664: 660: 656: 644: 639: 637: 632: 630: 625: 624: 622: 621: 615: 605: 602: 597: 591: 590: 589: 588: 581: 578: 576: 573: 571: 568: 566: 563: 561: 558: 556: 553: 551: 548: 546: 543: 541: 538: 537: 531: 530: 523: 520: 518: 515: 513: 510: 508: 505: 503: 500: 498: 495: 493: 490: 488: 487:Phylogenetics 485: 483: 480: 478: 475: 473: 470: 468: 465: 463: 460: 458: 455: 453: 450: 448: 445: 443: 440: 438: 435: 433: 430: 428: 425: 423: 420: 418: 415: 413: 410: 408: 405: 403: 400: 399: 393: 392: 383: 379: 376: 374: 371: 369: 366: 364: 361: 359: 356: 354: 351: 349: 346: 344: 343: 339: 337: 334: 332: 331:Before Darwin 329: 327: 324: 322: 319: 318: 311: 310: 302: 299: 297: 294: 292: 289: 287: 284: 282: 279: 277: 274: 272: 269: 267: 264: 260: 257: 256: 255: 252: 250: 247: 245: 242: 240: 237: 235: 232: 231: 224: 223: 215: 212: 210: 207: 205: 202: 200: 197: 195: 192: 190: 187: 185: 182: 180: 177: 175: 172: 170: 167: 165: 162: 160: 159:Genetic drift 157: 155: 152: 150: 147: 145: 142: 140: 137: 135: 132: 130: 127: 125: 122: 121: 114: 113: 107: 104: 102: 99: 97: 94: 93: 90: 87: 85: 82: 80: 77: 75: 72: 71: 69: 68: 64: 60: 55: 51: 50: 47: 43: 39: 38: 33: 19: 2251: 2247: 2234: 2227: 2222: 2190: 2186: 2120: 2116: 2092: 2066: 2041: 2011: 1993: 1985: 1975: 1948: 1931: 1927: 1921: 1911: 1904: 1898:. p. 5. 1894: 1884: 1864: 1860:Egan, Kieran 1854: 1844:, retrieved 1840:the original 1834: 1828: 1795: 1791: 1785: 1758: 1754: 1744: 1719: 1715: 1709: 1692: 1688: 1682: 1670:. Retrieved 1666: 1656: 1624:(6): 741–7. 1621: 1617: 1607: 1591: 1581: 1579: 1572:. Retrieved 1562: 1553: 1546:. Retrieved 1536: 1527: 1521:. Retrieved 1514:the original 1493: 1489: 1476: 1468: 1462:. Retrieved 1457: 1417: 1411: 1370: 1366: 1360: 1353:Desmond 1989 1348: 1335: 1324: 1315: 1300: 1293: 1284: 1262: 1256: 1247: 1225: 1216: 1197: 1178:Stage theory 1160:anti-Semitic 1155: 1141: 1123: 1103: 1094: 1075: 1070: 1060: 1049: 1036: 1028: 1014: 1001: 993:heterochrony 982: 973: 952: 942: 913: 891:embryos: in 877: 872:evolutionary 861: 850: 837: 800:Richard Owen 780:naturalistic 765: 735: 714: 707: 702: 670: 669:'s phrase " 662: 658: 654: 652: 507:Sociobiology 492:Paleontology 340: 276:Biogeography 271:Biodiversity 189:Coextinction 179:Co-operation 154:Polymorphism 79:Introduction 2113:Mayr, Ernst 1990:pp. 386-387 1988:. pp.  1598:, pp.  1341:Danesi 1993 1317:activities. 1067:Jean Piaget 937:Optic lobes 933:Wilhelm His 931:Drawing by 675:development 517:Systematics 326:Renaissance 204:Convergence 194:Contingency 184:Coevolution 2313:Categories 2052:0253113709 1982:Tim Ingold 1968:Gould 1977 1953:Gould 1977 1846:2013-02-20 1596:Gould 1977 1574:27 October 1548:27 October 1523:2008-04-30 1496:(1): 1–8. 1464:2008-05-03 1209:References 1173:Glottogony 1152:propaganda 1086:Lamarckian 997:heterotopy 989:morphology 843:Lamarckism 776:Lamarckism 761:biogenetic 727:Embryology 291:Cladistics 214:Extinction 199:Divergence 169:Speciation 149:Adaptation 63:John Gould 1895:Education 1761:: 69–75. 1510:0018-716X 1436:309071386 1387:1464-7931 1329:Mayr 1994 1071:parallels 1044:education 875:history. 868:phylogeny 751:, and by 691:phylogeny 550:Dysgenics 266:Phylogeny 164:Gene flow 134:Diversity 129:Variation 2172:(1899). 2145:84670449 2089:(1989). 2063:(1977). 1892:(1861). 1862:(1997). 1820:22520868 1777:28347942 1701:14756324 1672:18 April 1648:19883998 1403:23494485 1395:12475051 1167:See also 1134:Ontology 1054:—  970:compared 907:and the 889:tetrapod 864:Ontogeny 778:. These 687:ontogeny 614:Category 540:Eugenics 382:timeline 363:Evo-devo 321:Overview 139:Mutation 101:Evidence 96:Glossary 2303:Biology 2268:2801865 2215:2015664 2207:9278154 2137:3037718 2032:Sources 1984:(ed.). 1800:Bibcode 1736:2412887 1639:3729404 1600:189–193 1281:3414838 1051:little. 983:Modern 905:malleus 903:), the 893:mammals 885:pharynx 870:is the 824:Haeckel 738:biology 677:of the 106:History 89:Outline 2289:Portal 2266:  2213:  2205:  2143:  2135:  2101:  2075:  2049:  2018:  1872:  1818:  1775:  1734:  1699:  1646:  1636:  1508:  1434:  1424:  1401:  1393:  1385:  1308:  1286:wrong. 1279:  1269:  1244:255345 1242:  1232:  1115:atonal 909:stapes 847:Goethe 708:Since 679:embryo 612:  336:Darwin 2264:JSTOR 2211:S2CID 2141:S2CID 2133:JSTOR 1732:JSTOR 1517:(PDF) 1486:(PDF) 1399:S2CID 1249:tree. 1189:Notes 855:with 763:law. 74:Index 2203:PMID 2099:ISBN 2073:ISBN 2047:ISBN 2016:ISBN 1870:ISBN 1816:PMID 1773:PMID 1697:PMID 1674:2016 1644:PMID 1576:2016 1550:2016 1506:ISSN 1432:OCLC 1422:ISBN 1391:PMID 1383:ISSN 1306:ISBN 1277:OCLC 1267:ISBN 1240:OCLC 1230:ISBN 1148:Nazi 966:and 845:and 832:and 747:and 719:and 653:The 84:Main 2256:doi 2248:Man 2195:doi 2191:196 2125:doi 1936:doi 1808:doi 1763:doi 1724:doi 1634:PMC 1626:doi 1498:doi 1375:doi 1140:'s 897:jaw 849:'s 794:'s 661:or 61:by 2315:: 2262:. 2252:14 2250:. 2209:. 2201:. 2189:. 2139:. 2131:. 2121:69 2119:. 2002:^ 1992:. 1960:^ 1932:46 1930:. 1814:. 1806:. 1796:27 1794:. 1771:. 1759:45 1757:. 1753:. 1730:. 1720:27 1718:. 1693:47 1691:. 1665:. 1642:. 1632:. 1622:21 1620:. 1616:. 1578:. 1552:. 1526:. 1504:. 1494:35 1492:. 1488:. 1467:. 1456:. 1444:^ 1430:. 1397:. 1389:. 1381:. 1371:77 1369:. 1314:. 1283:. 1275:. 1246:. 1238:. 1132:. 1092:. 1080:, 1011:: 911:. 723:. 705:. 2291:: 2270:. 2258:: 2217:. 2197:: 2176:. 2164:. 2147:. 2127:: 2107:. 2081:. 2055:. 2024:. 1942:. 1938:: 1878:. 1822:. 1810:: 1802:: 1779:. 1765:: 1738:. 1726:: 1703:. 1676:. 1650:. 1628:: 1500:: 1438:. 1405:. 1377:: 1339:( 1020:. 899:( 642:e 635:t 628:v 384:) 380:( 34:. 20:)

Index

Haeckel's Law
Recapitulation theory of atonement
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
Coextinction
Contingency
Divergence
Convergence

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