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Fitness landscape

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separated by fitness valleys in such multidimensional landscapes, or whether they are connected by vastly long neutral ridges. Additionally, the fitness landscape is not static in time but dependent on the changing environment and evolution of other genes. It is hence more of a seascape, further affecting how separated adaptive peaks can actually be. Additionally, it is relevant to take into account that a landscape is in general not an absolute but a relative function. Finally, since it is common to use function as a proxy for fitness when discussing enzymes, any promiscuous activities exist as overlapping landscapes that together will determine the ultimate fitness of the organism, implying a gap between different coexisting relative landscapes.
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formed by the expected fitness at each point. If fitness changes with time (dynamic optimisation) or with other species in the environment (co-evolution), it can still be useful to reason about the trajectories of the instantaneous fitness landscape. However, in some cases (for example, preference-based interactive evolutionary computation) the relevance is more limited, because there is no guarantee that human preferences are consistent with a single fitness assignment.
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landscapes can then be used relative to each other to visually represent the relevant features. Additionally, fitness landscapes of small subsets of evolutionary pathways may be experimentally constructed and visualized, potentially revealing features such as fitness peaks and valleys. Fitness landscapes of evolutionary pathways indicate the probable evolutionary steps and endpoints among sets of individual mutations.
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Even in cases where a fitness function is hard to define, the concept of a fitness landscape can be useful. For example, if fitness evaluation is by stochastic sampling, then sampling is from a (usually unknown) distribution at each point; nevertheless is can be useful to reason about the landscape
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Fitness landscapes are often conceived of as ranges of mountains. There exist local peaks (points from which all paths are downhill, i.e. to lower fitness) and valleys (regions from which many paths lead uphill). A fitness landscape with many local peaks surrounded by deep valleys is called rugged.
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Evolutionary optimization techniques are particularly useful in situations in which it is easy to determine the quality of a single solution, but hard to go through all possible solutions one by one (it is easy to determine the driving time for a particular route of the delivery truck, but it is
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With these limitations in mind, fitness landscapes can still be an instructive way of thinking about evolution. It is fundamentally possible to measure (even if not to visualise) some of the parameters of landscape ruggedness and of peak number, height, separation, and clustering. Simplified 3D
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Several important caveats exist. Since the human mind struggles to think in greater than three dimensions, 3D topologies can mislead when discussing highly multi-dimensional fitness landscapes. In particular it is not clear whether peaks in natural biological fitness landscapes are ever truly
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Note that a local optimum cannot always be found even in evolutionary time: if the local optimum can be found in a reasonable amount of time then the fitness landscape is called "easy" and if the time required is exponential then the fitness landscape is called "hard". Hard landscapes are
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characterized by the maze-like property by which an allele that was once beneficial becomes deleterious, forcing evolution to backtrack. However, the presence of the maze-like property in biophysically inspired fitness landscapes may not be sufficient to generate a hard landscape.
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In the third kind of fitness landscape, each dimension represents a different phenotypic trait. Under the assumptions of quantitative genetics, these phenotypic dimensions can be mapped onto genotypes. See the visualizations below for examples of phenotype to fitness landscapes.
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Sketch of a fitness landscape. The arrows indicate the preferred flow of a population on the landscape, and the points A and C are local optima. The red ball indicates a population that has moved from a very low fitness value to the top of a
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problems) by imitating the dynamics of biological evolution. For example, a delivery truck with a number of destination addresses can take a large variety of different routes, but only very few will result in a short driving time.
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Wright's mathematical work described fitness as a function of allele frequencies. Here, each dimension describes an allele frequency at a different gene, and goes between 0 and 1.
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falls into this category of fitness landscape. Newer network analysis techniques such as selection-weighted attraction graphing (SWAG) also use a dimensionless genotype space.
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prefer the notion that fitness is being maximized. Therefore, taking the inverse of a potential function turns it into a fitness function, and vice versa.
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typically climbs uphill in the fitness landscape, by a series of small genetic changes, until – in the infinite time limit – a local optimum is reached.
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Poelwijk, Frank J; Kiviet, Daniel J; Weinreich, Daniel M; Tans, Sander J (2007). "Empirical fitness landscapes reveal accessible evolutionary paths".
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Counterbalance: Evolution as movement through a fitness landscape—an interesting (if flawed) discussion of evolution and fitness landscapes
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to the problem of interest (i.e., every possible route in the case of the delivery truck) how 'good' it is. This is done by introducing a
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Mustonen, Ville; Lässig, Michael (2009). "From fitness landscapes to seascapes: Non-equilibrium dynamics of selection and adaptation".
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can be a more complicated object, for example a list of destination addresses in the case of the delivery truck), which is called the
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The idea of studying evolution by visualizing the distribution of fitness values as a kind of landscape was first introduced by
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Woodcock, Glenn; Higgs, Paul G (1996). "Population Evolution on a Multiplicative Single-Peak Fitness Landscape".
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Apart from the field of evolutionary biology, the concept of a fitness landscape has also gained importance in
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almost impossible to check all possible routes once the number of destinations grows to more than a handful).
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Beerenwinkel, Niko; Pachter, Lior; Sturmfels, Bernd (2007). "Epistasis and Shapes of Fitness Landscapes".
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have the same replication rate, on the other hand, a fitness landscape is said to be flat. An evolving
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In order to use many common forms of evolutionary optimization, one has to define for every possible
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Diaz Ochoa, Juan G (2017). "Elastic Multi-scale Mechanisms: Computation and Biological Evolution".
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Bukkuri A, Pienta KJ, Hockett I, Austin RH, Hammarlund EU, Amend SR, Brown JS (February 2023).
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Superimposing evolutionary trajectories onto fitness landscapes in virtual reality
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At Home in the Universe: The Search for Laws of Self-Organization and Complexity
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Model used to visualise relationship between genotypes and reproductive success
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Pleiotropy Blog—an interesting discussion of Sergey Gavrilets's contributions
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The Geometry of Evolution: Adaptive Landscapes and Theoretical Morphospaces
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In all fitness landscapes, height represents and is a visual metaphor for
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traditionally think in terms of minimizing the potential function, while
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Kaplan, Jonathan (2008). "The end of the adaptive landscape metaphor?".
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Recent Advances in the Theory and Application of Fitness Landscapes
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Video: Using fitness landscapes to visualize evolution in action
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Evolution 101—Shifting Balance Theory (Figure at bottom of page)
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Proceedings of the Sixth International Congress on Genetics
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has a well-defined replication rate (often referred to as
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is a good solution. In the case of the delivery truck,
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could be the number of deliveries per hour on route
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The two concepts only differ in that 850:is a simple number, such as 0.3, while 37: 2713:Index of evolutionary biology articles 2389:Index of evolutionary biology articles 998:Sewall Wright and Evolutionary Biology 783:Allele frequency to fitness landscapes 752:Visualization of two dimensions of an 1690:An Introduction to Genetic Algorithms 7: 1132:Steinberg, B; Ostermeier, M (2016). 2199:Evolutionary developmental biology 1763:10.1093/oso/9780195079517.001.0001 1717:Foundations of Genetic Programming 25: 2733: 2156:Evolution of sexual reproduction 1711:Langdon, W.B.; Poli, R. (2002). 1219:10.1111/j.1558-5646.2011.01236.x 1203:"Visualizing Fitness Landscapes" 929: 924: 601: 600: 587: 45: 2756:Modern synthesis (20th century) 1000:. University of Chicago Press. 791:Phenotype to fitness landscapes 594:Evolutionary biology portal 2513:Constructive neutral evolution 1927:Genotype–phenotype distinction 1631:. Princeton University Press. 1403:Journal of Molecular Evolution 1360:Journal of Theoretical Biology 1256:. Cambridge University Press. 761:Genotype to fitness landscapes 553:Creation–evolution controversy 307:History of evolutionary theory 1: 2184:Regulation of gene expression 2463:Fisher's fundamental theorem 2354:Endless Forms Most Beautiful 2134:Evolution of genetic systems 1942:Gene–environment correlation 1937:Gene–environment interaction 1719:. Springer. pp. 17–26. 1512:. Michigan State University. 1201:McCandlish, David M (2011). 996:Provine, William B. (1986). 800:In evolutionary optimization 538:Evolution as fact and theory 2488:Coefficient of relationship 2333:Christiane NĂĽsslein-Volhard 1757:. Oxford University Press. 1725:10.1007/978-3-662-04726-2_2 1661:. Oxford University Press. 1476:Pup Fish Evolution—UC Davis 1096:10.1534/genetics.120.302815 1047:10.1534/genetics.119.302000 1029:Kaznatcheev, Artem (2019). 670:. It is assumed that every 2782: 2209:Hedgehog signaling pathway 2086:Developmental architecture 1851:10.1007/s12032-023-01968-0 1625:Gavrilets, Sergey (2004). 1250:McGhee, George R. (2006). 846:(scalar valued means that 573:Nature-nurture controversy 2708: 2483:Coefficient of inbreeding 2386: 2036:Transgressive segregation 1599:Climbing Mount Improbable 1529:10.1007/978-3-642-41888-4 1423:10.1007/s00239-017-9823-7 1337:10.1016/j.tig.2009.01.002 1302:10.1007/s10539-008-9116-z 806:evolutionary optimization 702:evolutionary optimization 460:Evolutionary neuroscience 435:Evolutionary epistemology 415:Evolutionary anthropology 395:Applications of evolution 2661:Evolutionary game theory 2443:Hardy–Weinberg principle 1290:Biology & Philosophy 450:Evolutionary linguistics 445:Evolutionary game theory 420:Evolutionary computation 2473:Shifting balance theory 2214:Notch signaling pathway 2189:Gene regulatory network 2072:Dual inheritance theory 1713:"2. Fitness Landscapes" 965:Wright, Sewall (1932). 912:Caveats and limitations 660:evolutionary landscapes 563:Objections to evolution 470:Evolutionary psychology 465:Evolutionary physiology 410:Evolutionary aesthetics 389:Fields and applications 371:History of paleontology 2458:Linkage disequilibrium 2262:cis-regulatory element 2170:Control of development 2050:Non-genetic influences 2016:evolutionary landscape 1380:10.1006/jtbi.1996.0049 1158:10.1126/sciadv.1500921 757: 722: 495:Speciation experiments 475:Experimental evolution 430:Evolutionary economics 252:Recent human evolution 110:Processes and outcomes 2700:Quantitative genetics 2609:Balding–Nichols model 2594:Population bottleneck 2589:Small population size 2493:Selection coefficient 2373:Nature versus nurture 2277:Cell surface receptor 2194:Evo-devo gene toolkit 2093:Developmental biology 2031:Polygenic inheritance 1957:Quantitative genetics 751: 719: 455:Evolutionary medicine 400:Biosocial criminology 366:History of speciation 279:Evolutionary taxonomy 242:Timeline of evolution 2740:Evolutionary biology 2571:Background selection 2558:on genomic variation 2556:Effects of selection 2508:Population structure 2282:Transcription factor 1997:Genetic assimilation 1984:Genetic architecture 1755:The Origins of Order 1504:Cameron, L. (2023). 814:evolution strategies 754:NK fitness landscape 668:reproductive success 648:evolutionary biology 425:Evolutionary ecology 39:Evolutionary biology 2761:Population genetics 2690:Population genomics 2566:Genetic hitchhiking 2453:Identity by descent 2429:Population genetics 2378:Morphogenetic field 2295:Influential figures 1810:10.1038/nature05451 1802:2007Natur.445..383P 1578:2006q.bio.....3034B 1415:2018JMolE..86...47D 1372:1996JThBi.179...61W 1150:2016SciA....2E0921S 688:supernormal stimuli 656:adaptive landscapes 527:Social implications 515:Universal Darwinism 505:Island biogeography 440:Evolutionary ethics 405:Ecological genetics 351:Molecular evolution 289:Transitional fossil 117:Population genetics 33:Part of a series on 2676:Landscape genetics 2067:Genomic imprinting 1325:Trends in Genetics 943:Viral quasispecies 810:genetic algorithms 758: 723: 652:fitness landscapes 558:Theistic evolution 490:Selective breeding 202:Parallel evolution 167:Adaptive radiation 18:Fitness landscapes 2721: 2720: 2671:Genetic genealogy 2666:Fitness landscape 2395: 2394: 2328:Eric F. 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Waddington 2174: 2151:Neutral networks 1901: 1894: 1887: 1878: 1872: 1862: 1829: 1784: 1751:Kauffman, Stuart 1746: 1707: 1695: 1680: 1655:Kauffman, Stuart 1650: 1621: 1594:Dawkins, Richard 1589: 1571: 1569:q-bio.PE/0603034 1550: 1513: 1443: 1442: 1398: 1392: 1391: 1355: 1349: 1348: 1320: 1314: 1313: 1285: 1279: 1274: 1268: 1267: 1247: 1241: 1240: 1230: 1198: 1192: 1186: 1180: 1179: 1169: 1138:Science Advances 1129: 1118: 1117: 1107: 1075: 1069: 1068: 1058: 1026: 1020: 1019: 993: 982: 981: 971: 962: 933: 928: 856:fitness function 808:methods such as 706:fitness function 682:in evolution by 636: 629: 622: 609: 604: 603: 596: 592: 591: 568:Level of support 361:Current research 346:Modern synthesis 341:Before synthesis 294:Extinction event 52:Darwin's finches 49: 30: 21: 2781: 2780: 2776: 2775: 2774: 2772: 2771: 2770: 2746: 2745: 2744: 2732: 2724: 2722: 2717: 2704: 2639: 2613: 2575: 2559: 2557: 2550: 2517: 2448:Genetic linkage 2431: 2426: 2396: 2391: 2382: 2361: 2348:Sean B. 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2144: 2142: 2139: 2138: 2136: 2132: 2126: 2123: 2121: 2118: 2116: 2113: 2109: 2106: 2104: 2101: 2100: 2099: 2098:Morphogenesis 2096: 2094: 2091: 2090: 2088: 2084: 2078: 2075: 2073: 2070: 2068: 2065: 2063: 2060: 2058: 2055: 2054: 2052: 2048: 2042: 2039: 2037: 2034: 2032: 2029: 2027: 2024: 2022: 2019: 2017: 2013: 2010: 2008: 2005: 2003: 2000: 1998: 1995: 1993: 1990: 1989: 1987: 1985: 1981: 1975: 1972: 1968: 1965: 1964: 1963: 1960: 1958: 1955: 1953: 1950: 1948: 1945: 1943: 1940: 1938: 1935: 1933: 1932:Reaction norm 1930: 1928: 1925: 1924: 1922: 1918: 1914: 1910: 1902: 1897: 1895: 1890: 1888: 1883: 1882: 1879: 1870: 1866: 1861: 1856: 1852: 1848: 1844: 1840: 1836: 1831: 1827: 1823: 1819: 1815: 1811: 1807: 1803: 1799: 1795: 1791: 1786: 1782: 1778: 1774: 1768: 1764: 1760: 1756: 1752: 1748: 1744: 1740: 1736: 1734:3-540-42451-2 1730: 1726: 1722: 1718: 1714: 1709: 1705: 1699: 1696:. MIT Press. 1692: 1691: 1686: 1682: 1678: 1674: 1670: 1664: 1660: 1656: 1652: 1648: 1644: 1640: 1634: 1630: 1629: 1623: 1619: 1615: 1611: 1609:0-393-03930-7 1605: 1601: 1600: 1595: 1591: 1587: 1583: 1579: 1575: 1570: 1565: 1561: 1557: 1552: 1548: 1544: 1540: 1534: 1530: 1526: 1522: 1521: 1515: 1511: 1507: 1502: 1500: 1497: 1496: 1491: 1490: 1487: 1484: 1482: 1479: 1477: 1474: 1472: 1469: 1467: 1464: 1462: 1459: 1458: 1454: 1453: 1449: 1440: 1436: 1432: 1428: 1424: 1420: 1416: 1412: 1408: 1404: 1397: 1394: 1389: 1385: 1381: 1377: 1373: 1369: 1365: 1361: 1354: 1351: 1346: 1342: 1338: 1334: 1330: 1326: 1319: 1316: 1311: 1307: 1303: 1299: 1296:(5): 625–38. 1295: 1291: 1284: 1281: 1278: 1273: 1270: 1265: 1259: 1255: 1254: 1246: 1243: 1238: 1234: 1229: 1224: 1220: 1216: 1212: 1208: 1204: 1197: 1194: 1190: 1189:Kauffman 1993 1185: 1182: 1177: 1173: 1168: 1163: 1159: 1155: 1151: 1147: 1143: 1139: 1135: 1128: 1126: 1124: 1120: 1115: 1111: 1106: 1101: 1097: 1093: 1089: 1085: 1081: 1074: 1071: 1066: 1062: 1057: 1052: 1048: 1044: 1040: 1036: 1032: 1025: 1022: 1017: 1013: 1009: 1007:0-226-68473-3 1003: 999: 992: 990: 988: 984: 979: 975: 968: 961: 959: 955: 948: 944: 941: 940: 936: 934: 932: 927: 922: 918: 911: 909: 907: 903: 899: 895: 891: 886: 882: 878: 876: 872: 868: 865:implies that 864: 859: 857: 853: 849: 845: 842: 838: 834: 831: 826: 823: 819: 815: 811: 807: 799: 797: 790: 788: 782: 780: 778: 774: 770: 768: 760: 755: 750: 746: 742: 740: 736: 730: 728: 718: 711: 709: 707: 703: 698: 696: 695:Sewall Wright 691: 689: 685: 681: 677: 673: 669: 665: 661: 657: 653: 649: 637: 632: 630: 625: 623: 618: 617: 615: 614: 608: 598: 595: 590: 584: 583: 582: 581: 574: 571: 569: 566: 564: 561: 559: 556: 554: 551: 549: 546: 544: 541: 539: 536: 534: 531: 530: 524: 523: 516: 513: 511: 508: 506: 503: 501: 498: 496: 493: 491: 488: 486: 483: 481: 480:Phylogenetics 478: 476: 473: 471: 468: 466: 463: 461: 458: 456: 453: 451: 448: 446: 443: 441: 438: 436: 433: 431: 428: 426: 423: 421: 418: 416: 413: 411: 408: 406: 403: 401: 398: 396: 393: 392: 386: 385: 376: 372: 369: 367: 364: 362: 359: 357: 354: 352: 349: 347: 344: 342: 339: 337: 336: 332: 330: 327: 325: 324:Before Darwin 322: 320: 317: 315: 312: 311: 304: 303: 295: 292: 290: 287: 285: 282: 280: 277: 275: 272: 270: 267: 265: 262: 260: 257: 253: 250: 249: 248: 245: 243: 240: 238: 235: 233: 230: 228: 225: 224: 217: 216: 208: 205: 203: 200: 198: 195: 193: 190: 188: 185: 183: 180: 178: 175: 173: 170: 168: 165: 163: 160: 158: 155: 153: 152:Genetic drift 150: 148: 145: 143: 140: 138: 135: 133: 130: 128: 125: 123: 120: 118: 115: 114: 107: 106: 100: 97: 95: 92: 90: 87: 86: 83: 80: 78: 75: 73: 70: 68: 65: 64: 62: 61: 57: 53: 48: 44: 43: 40: 36: 32: 31: 19: 2665: 2651:Biogeography 2625:R. A. Fisher 2503:Heritability 2436:Key concepts 2352: 2245:eyeless gene 2141:Evolvability 2115:Segmentation 2011: 1992:Canalisation 1962:Heterochrony 1952:Heritability 1920:Key concepts 1842: 1838: 1793: 1789: 1754: 1716: 1689: 1658: 1627: 1597: 1559: 1555: 1523:. Springer. 1519: 1509: 1409:(1): 47–57. 1406: 1402: 1396: 1366:(1): 61–73. 1363: 1359: 1353: 1331:(3): 111–9. 1328: 1324: 1318: 1293: 1289: 1283: 1272: 1252: 1245: 1210: 1206: 1196: 1191:, p. 43 1184: 1141: 1137: 1087: 1083: 1073: 1038: 1034: 1024: 997: 980:(8): 355–66. 977: 973: 923: 919: 915: 889: 887: 883: 879: 874: 870: 866: 862: 860: 851: 847: 843: 832: 827: 803: 794: 786: 771: 764: 743: 731: 724: 699: 692: 680:flawed forms 655: 651: 645: 500:Sociobiology 485:Paleontology 333: 269:Biogeography 264:Biodiversity 182:Coextinction 172:Co-operation 147:Polymorphism 72:Introduction 2604:Coalescence 2343:Mike Levine 2252:Distal-less 2077:Polyphenism 2057:Epigenetics 1909:development 818:engineering 510:Systematics 319:Renaissance 197:Convergence 187:Contingency 177:Coevolution 2750:Categories 2546:Ecological 2536:Artificial 2321:Lac operon 2146:Robustness 2125:Modularity 2120:Metamerism 2026:Plasticity 2021:Pleiotropy 1974:Heterotopy 1845:(4): 109. 1781:1410954535 1647:1044748197 1602:. Norton. 1547:7324758532 1016:1036863434 949:References 906:biologists 902:physicists 739:population 712:In biology 658:(types of 284:Cladistics 207:Extinction 192:Divergence 162:Speciation 142:Adaptation 56:John Gould 2766:Selection 2656:Evolution 2523:Selection 2272:Morphogen 2257:Engrailed 2240:Pax genes 2161:Tinkering 2007:Epistasis 2002:Dominance 1913:phenotype 1839:Med Oncol 1743:828735699 1677:923535473 1618:757336308 1310:170649453 1207:Evolution 822:logistics 767:hypercube 735:genotypes 697:in 1932. 664:genotypes 543:Dysgenics 259:Phylogeny 157:Gene flow 127:Diversity 122:Variation 2680:genomics 2618:Founders 2235:Hox gene 2223:Elements 2204:Homeobox 1869:36853375 1818:17251971 1753:(1993). 1687:(1996). 1657:(1995). 1596:(1996). 1510:MSUToday 1439:22624633 1431:29248946 1345:19232770 1237:21644947 1176:26844293 1114:32107278 1084:Genetics 1065:30833289 1035:Genetics 937:See also 841:function 839:-valued 830:solution 777:NK model 672:genotype 607:Category 533:Eugenics 375:timeline 356:Evo-devo 314:Overview 132:Mutation 94:Evidence 89:Glossary 2531:Natural 2498:Fitness 2366:Debates 2177:Systems 2103:Eyespot 1967:Neoteny 1860:9974726 1826:4415468 1798:Bibcode 1586:2398598 1574:Bibcode 1411:Bibcode 1388:8733432 1368:Bibcode 1228:3668694 1167:4737206 1146:Bibcode 1105:7153934 1056:6499524 898:physics 861:A high 733:If all 727:fitness 676:fitness 99:History 82:Outline 2726:Portal 2541:Sexual 2267:Ligand 1947:Operon 1867:  1857:  1824:  1816:  1790:Nature 1779:  1769:  1741:  1731:  1700:  1675:  1665:  1645:  1635:  1616:  1606:  1584:  1545:  1535:  1437:  1429:  1386:  1343:  1308:  1260:  1235:  1225:  1174:  1164:  1112:  1102:  1063:  1053:  1014:  1004:  837:scalar 605:  329:Darwin 1822:S2CID 1694:(PDF) 1564:arXiv 1435:S2CID 1306:S2CID 970:(PDF) 721:peak. 67:Index 2678:and 1907:The 1865:PMID 1814:PMID 1777:OCLC 1767:ISBN 1739:OCLC 1729:ISBN 1698:ISBN 1673:OCLC 1663:ISBN 1643:OCLC 1633:ISBN 1614:OCLC 1604:ISBN 1543:OCLC 1533:ISBN 1427:PMID 1384:PMID 1341:PMID 1258:ISBN 1233:PMID 1172:PMID 1110:PMID 1061:PMID 1012:OCLC 1002:ISBN 890:f(s) 871:f(s) 863:f(s) 848:f(s) 844:f(s) 666:and 77:Main 1911:of 1855:PMC 1847:doi 1806:doi 1794:445 1759:doi 1721:doi 1525:doi 1419:doi 1376:doi 1364:179 1333:doi 1298:doi 1223:PMC 1215:doi 1162:PMC 1154:doi 1100:PMC 1092:doi 1088:214 1051:PMC 1043:doi 1039:212 896:in 820:or 812:or 775:'s 700:In 654:or 646:In 54:by 2752:: 2314:+ 1863:. 1853:. 1843:40 1841:. 1837:. 1820:. 1812:. 1804:. 1792:. 1775:. 1765:. 1737:. 1727:. 1715:. 1671:. 1641:. 1612:. 1582:MR 1580:. 1572:. 1560:17 1558:. 1541:. 1531:. 1508:. 1433:. 1425:. 1417:. 1407:86 1405:. 1382:. 1374:. 1362:. 1339:. 1329:25 1327:. 1304:. 1294:23 1292:. 1231:. 1221:. 1211:65 1209:. 1205:. 1170:. 1160:. 1152:. 1140:. 1136:. 1122:^ 1108:. 1098:. 1086:. 1082:. 1059:. 1049:. 1037:. 1033:. 1010:. 986:^ 976:. 972:. 957:^ 858:. 690:. 650:, 2728:: 2421:e 2414:t 2407:v 2014:/ 1900:e 1893:t 1886:v 1871:. 1849:: 1828:. 1808:: 1800:: 1783:. 1761:: 1745:. 1723:: 1706:. 1679:. 1649:. 1620:. 1588:. 1576:: 1566:: 1549:. 1527:: 1441:. 1421:: 1413:: 1390:. 1378:: 1370:: 1347:. 1335:: 1312:. 1300:: 1266:. 1239:. 1217:: 1178:. 1156:: 1148:: 1142:2 1116:. 1094:: 1067:. 1045:: 1018:. 978:1 875:s 867:s 852:s 833:s 635:e 628:t 621:v 377:) 373:( 20:)

Index

Fitness landscapes
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
Parallel evolution

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