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QST (genetics)

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is calculated by finding the variance of a quantitative trait within and among subpopulations, and for the total population. Variance of a quantitative trait among populations (σ
587:, Marchini et al. found divergence between native and invasive populations during initial establishment in the invaded range, but minimal divergence during 283: 968:
Leinonen T, McCairns RJ, O'Hara RB, Merilä J (March 2013). "Q(ST)-F(ST) comparisons: evolutionary and ecological insights from genomic heterogeneity".
442:, this is interpreted as evidence of divergent selection, because it indicates more differentiation in the trait than could be produced solely by 581:
values in many populations, suggesting local adaptation for cold-adapted characteristics. During an assessment of the invasive species,
780: 533:, weighting the genetic contributions of each population can increase detection of adaptation. In order to improve precision of Q 116: 514: 1337:"Potential adaptive divergence between subspecies and populations of snapdragon plants inferred from Q ST – F ST comparisons" 1255:"Comparison of genetic differentiation at marker loci and quantitative traits: Natural selection and genetic differentiation" 202: 1011:
Pujol B, Wilson AJ, Ross RI, Pannell JR (November 2008). "Are Q(ST)-F(ST) comparisons for natural populations meaningful?".
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ratios. Stepping stone models, which can generate more evolutionary noise than island models, are more likely to experience
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values for traits associated with altitude adaptation: plant height, number of branches, and internode length.
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Marin, Sara; Gibert, Anaïs; Archambeau, Juliette; Bonhomme, Vincent; Lascoste, Mylène; Pujol, Benoit (2020).
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must be calculated with neutral loci, however over filtering of non-neutral loci can artificially reduce F
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represents the proportion of variance among subpopulations, and is it’s calculation is synonymous to F
502: 661: 566: 455: 60: 1276: 1186: 1157:"Selective differentiation during the colonization and establishment of a newly invasive species" 1085: 1036: 993: 947: 885: 32: 1374: 1356: 1317: 1235: 1178: 1134: 1077: 1028: 985: 939: 910:"Common garden experiments to study local adaptation need to account for population structure" 877: 828: 760: 719: 666: 593: 554: 477:
is subject to multiple ecological and evolutionary assumptions, and since the development of Q
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analyses often involve culturing organisms in consistent environmental conditions, known as
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McKay JK, Latta RG (June 2002). "Adaptive population divergence: markers, QTL and traits".
1056:"Comparative studies of quantitative trait and neutral marker divergence: a meta-analysis" 909: 855:
framework in hierarchically structured populations: Impacts of inbreeding and dominance"
1369: 1336: 1230: 1205: 1129: 1104: 824: 714: 689: 40: 793: 690:"Population structure in Daphnia obtusa: quantitative genetic and allozymic variation" 1391: 1271: 1254: 1072: 1055: 1024: 951: 889: 808: 755: 738: 443: 372:{\displaystyle Q_{ST}={\frac {\sigma _{GB}^{2}}{\sigma _{GB}^{2}+2\sigma _{GW}^{2}}}} 100: 44: 1280: 1190: 1040: 1089: 997: 646: 1296:"Ecological genetics and seed transfer guidelines for Pinus albicaulis (Pinaceae)" 466:
are equivalent, the observed trait differentiation could be due to genetic drift.
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of neutral loci to test if variation in a quantitative trait is a result of
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are not present, and the subpopulations exist within an island model.
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analyses, more populations (>20) should be included in analyses.
505:, resulting in conservative estimates of divergent selection when Q 1206:"Bias and precision in QST estimates: problems and some solutions" 35:. It was developed by Ken Spitze in 1993. Its name reflects that Q 849:
Cubry P, Scotti I, Oddou-Muratorio S, Lefèvre F (November 2017).
509:
is high, and inconclusive results of balancing selection when Q
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is the total genetic variance in all populations. Therefore, Q
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And the variance of a quantitative trait within populations (σ
529:. If a subset of populations act as sources, such as during 605:
analyses revealed different adaptation trends between two
390:
is subject to several assumptions: populations must be in
184:{\displaystyle \sigma _{GB}^{2}=(1-Q_{ST})\sigma _{T}^{2}} 1054:
Leinonen T, O'Hara RB, Cano JM, Merilä J (January 2008).
261:{\displaystyle \sigma _{GW}^{2}=2Q_{ST}\sigma _{T}^{2}} 1155:
Marchini GL, Arredondo TM, Cruzan MB (November 2018).
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to evaluate suitable populations for seed transfer of
103:. However, instead of using genetic differentiation, Q 286: 205: 119: 908:de Villemereuil P, Gaggiotti OE, Goudet J (2022). 617:). While both subspecies occur at all elevations, 371: 260: 183: 27:is a statistic intended to measure the degree of 1103:Miller JR, Wood BP, Hamilton MB (October 2008). 963: 961: 278:can be calculated with the following equation: 591:. In an examination of the common snapdragon ( 683: 681: 458:is expected to be present. If the values of Q 394:, observed variation is assumed to be due to 8: 844: 842: 1294:Bower, Andrew D.; Aitken, Sally N. (2008). 1368: 1311: 1270: 1229: 1172: 1128: 1071: 933: 754: 713: 360: 352: 336: 328: 317: 309: 303: 291: 285: 252: 247: 234: 218: 210: 204: 175: 170: 154: 132: 124: 118: 677: 63:or genetic drift, an analysis known as 809:"The Genetic Structure of Populations" 1204:O'Hara RB, Merilä J (November 2005). 1150: 1148: 565:, indicating local adaptation. In an 7: 549:Multiple studies have incorporated Q 39:was intended to be analogous to the 31:among populations with regard to a 1105:"F(ST) and Q(ST) under neutrality" 825:10.1111/j.1469-1809.1949.tb02451.x 434:variance to genetic variance. If Q 14: 1253:Merilä, J.; Crnokrak, P. (2001). 781:Trends in Ecology & Evolution 739:"Evolutionary inference from QST" 489:analyses. Leinonen et al. notes F 1272:10.1046/j.1420-9101.2001.00348.x 1073:10.1111/j.1420-9101.2007.01445.x 1025:10.1111/j.1365-294X.2008.03958.x 756:10.1111/j.1365-294X.2008.03712.x 597:) along an elevation gradient, Q 1259:Journal of Evolutionary Biology 1161:Journal of Evolutionary Biology 1060:Journal of Evolutionary Biology 637:values for germination time. 569:study, Bower and Aitken used Q 501:is reduced in the presence of 163: 141: 1: 794:10.1016/S0169-5347(02)02478-3 561:is often observed to exceed F 497:values. Cubry et al. found Q 1222:10.1534/genetics.105.044545 1121:10.1534/genetics.108.092031 862:Molecular Ecology Resources 1424: 1300:American Journal of Botany 737:Whitlock MC (April 2008). 706:10.1093/genetics/135.2.367 545:applications in literature 517:can significantly impact Q 392:Hardy-Weinberg Equilibrium 688:Spitze K (October 1993). 428:common garden experiments 970:Nature Reviews. Genetics 851:"Generalization of the Q 557:and genetic drift, and Q 469:Suitable comparison of Q 396:additive genetic effects 55:is often compared with F 926:10.1111/1365-2745.13528 874:10.1111/1755-0998.12693 584:Brachypodium sylvaticum 553:to separate effects of 29:genetic differentiation 567:ecological restoration 513:is low. Additionally, 400:linkage disequilibrium 373: 262: 185: 657:Conservation genetics 652:Quantitative genetics 374: 263: 186: 18:quantitative genetics 515:population structure 438:is found to exceed F 430:, and comparing the 398:only, selection and 284: 203: 117: 1403:Population genetics 1313:10.3732/ajb.95.1.66 662:Divergent selection 577:. They found high Q 456:balancing selection 365: 341: 322: 257: 223: 197:) is described as: 180: 137: 111:) is described as: 61:divergent selection 914:Journal of Ecology 813:Annals of Eugenics 369: 348: 324: 305: 258: 243: 206: 181: 166: 120: 33:quantitative trait 1408:Statistical tests 1353:10.1111/mec.15546 1347:(16): 3010–3021. 1341:Molecular Ecology 1174:10.1111/jeb.13369 1167:(11): 1689–1703. 1019:(22): 4782–4785. 1013:Molecular Ecology 807:Wright S (1949). 743:Molecular Ecology 667:Genetic diversity 627:A. m. pseudomajus 611:A. m. pseudomajus 594:Antirrhinum majus 555:natural selection 367: 1415: 1383: 1382: 1372: 1332: 1326: 1325: 1315: 1291: 1285: 1284: 1274: 1250: 1244: 1243: 1233: 1216:(3): 1331–1339. 1201: 1195: 1194: 1176: 1152: 1143: 1142: 1132: 1115:(2): 1023–1037. 1100: 1094: 1093: 1075: 1051: 1045: 1044: 1008: 1002: 1001: 965: 956: 955: 937: 920:(5): 1005–1009. 905: 894: 893: 859: 846: 837: 836: 804: 798: 797: 775: 769: 768: 758: 749:(8): 1885–1896. 734: 728: 727: 717: 685: 386:Calculation of Q 378: 376: 375: 370: 368: 366: 364: 359: 340: 335: 321: 316: 304: 299: 298: 267: 265: 264: 259: 256: 251: 242: 241: 222: 217: 190: 188: 187: 182: 179: 174: 162: 161: 136: 131: 79:Calculation of Q 1423: 1422: 1418: 1417: 1416: 1414: 1413: 1412: 1388: 1387: 1386: 1334: 1333: 1329: 1293: 1292: 1288: 1252: 1251: 1247: 1203: 1202: 1198: 1154: 1153: 1146: 1102: 1101: 1097: 1053: 1052: 1048: 1010: 1009: 1005: 982:10.1038/nrg3395 967: 966: 959: 907: 906: 897: 857: 854: 848: 847: 840: 806: 805: 801: 777: 776: 772: 736: 735: 731: 687: 686: 679: 675: 643: 636: 632: 624: 604: 600: 589:range expansion 580: 572: 564: 560: 552: 547: 544: 536: 524: 520: 512: 508: 500: 496: 492: 488: 484: 480: 476: 472: 465: 461: 453: 449: 441: 437: 425: 421: 416: 413: 409: 389: 384: 323: 287: 282: 281: 277: 273: 230: 201: 200: 196: 150: 115: 114: 110: 106: 98: 94: 89: 84: 82: 72: 68: 58: 54: 50: 38: 25: 12: 11: 5: 1421: 1419: 1411: 1410: 1405: 1400: 1398:Genetics terms 1390: 1389: 1385: 1384: 1327: 1286: 1265:(6): 892–903. 1245: 1196: 1144: 1095: 1046: 1003: 976:(3): 179–190. 957: 895: 868:(6): e76–e83. 852: 838: 819:(4): 323–354. 799: 788:(6): 285–291. 770: 729: 700:(2): 367–374. 676: 674: 671: 670: 669: 664: 659: 654: 649: 642: 639: 634: 630: 622: 619:A. m. striatum 615:A. m. striatum 602: 598: 578: 575:whitebark pine 570: 562: 558: 550: 546: 542: 539: 534: 522: 518: 510: 506: 498: 494: 490: 486: 482: 478: 474: 470: 463: 459: 451: 450:is less than F 447: 439: 435: 423: 419: 415: 411: 407: 404: 387: 383: 380: 363: 358: 355: 351: 347: 344: 339: 334: 331: 327: 320: 315: 312: 308: 302: 297: 294: 290: 275: 271: 255: 250: 246: 240: 237: 233: 229: 226: 221: 216: 213: 209: 194: 178: 173: 169: 165: 160: 157: 153: 149: 146: 143: 140: 135: 130: 127: 123: 108: 104: 96: 92: 88: 85: 83: 80: 77: 70: 66: 56: 52: 48: 41:fixation index 36: 23: 13: 10: 9: 6: 4: 3: 2: 1420: 1409: 1406: 1404: 1401: 1399: 1396: 1395: 1393: 1380: 1376: 1371: 1366: 1362: 1358: 1354: 1350: 1346: 1342: 1338: 1331: 1328: 1323: 1319: 1314: 1309: 1305: 1301: 1297: 1290: 1287: 1282: 1278: 1273: 1268: 1264: 1260: 1256: 1249: 1246: 1241: 1237: 1232: 1227: 1223: 1219: 1215: 1211: 1207: 1200: 1197: 1192: 1188: 1184: 1180: 1175: 1170: 1166: 1162: 1158: 1151: 1149: 1145: 1140: 1136: 1131: 1126: 1122: 1118: 1114: 1110: 1106: 1099: 1096: 1091: 1087: 1083: 1079: 1074: 1069: 1065: 1061: 1057: 1050: 1047: 1042: 1038: 1034: 1030: 1026: 1022: 1018: 1014: 1007: 1004: 999: 995: 991: 987: 983: 979: 975: 971: 964: 962: 958: 953: 949: 945: 941: 936: 931: 927: 923: 919: 915: 911: 904: 902: 900: 896: 891: 887: 883: 879: 875: 871: 867: 863: 856: 845: 843: 839: 834: 830: 826: 822: 818: 814: 810: 803: 800: 795: 791: 787: 783: 782: 774: 771: 766: 762: 757: 752: 748: 744: 740: 733: 730: 725: 721: 716: 711: 707: 703: 699: 695: 691: 684: 682: 678: 672: 668: 665: 663: 660: 658: 655: 653: 650: 648: 645: 644: 640: 638: 628: 620: 616: 612: 608: 596: 595: 590: 586: 585: 576: 568: 556: 540: 538: 532: 528: 527:type 1 errors 516: 504: 467: 457: 445: 444:genetic drift 433: 429: 405: 403: 401: 397: 393: 381: 379: 361: 356: 353: 349: 345: 342: 337: 332: 329: 325: 318: 313: 310: 306: 300: 295: 292: 288: 279: 268: 253: 248: 244: 238: 235: 231: 227: 224: 219: 214: 211: 207: 198: 191: 176: 171: 167: 158: 155: 151: 147: 144: 138: 133: 128: 125: 121: 112: 102: 101:Sewall Wright 99:developed by 86: 78: 76: 74: 62: 46: 45:genetic locus 43:for a single 42: 34: 30: 26: 19: 1344: 1340: 1330: 1306:(1): 66–76. 1303: 1299: 1289: 1262: 1258: 1248: 1213: 1209: 1199: 1164: 1160: 1112: 1108: 1098: 1063: 1059: 1049: 1016: 1012: 1006: 973: 969: 917: 913: 865: 861: 816: 812: 802: 785: 779: 773: 746: 742: 732: 697: 693: 647:F-statistics 626: 618: 614: 610: 592: 582: 548: 468: 417: 385: 280: 269: 199: 192: 113: 90: 64: 21: 15: 1066:(1): 1–17. 935:10023/24327 629:had lower Q 414:comparisons 382:Assumptions 73:comparisons 1392:Categories 673:References 621:had high Q 607:subspecies 432:phenotypic 1361:0962-1083 952:225136876 944:0022-0477 890:206947951 503:dominance 350:σ 326:σ 307:σ 245:σ 208:σ 168:σ 148:− 122:σ 87:Equations 1379:32652730 1322:21632316 1281:83979407 1240:16085700 1210:Genetics 1191:52031406 1183:30120791 1139:18780742 1109:Genetics 1082:18028355 1041:11707577 1033:19140971 990:23381120 882:28681534 833:24540312 765:18363667 694:Genetics 641:See also 531:invasion 1370:7540467 1231:1456852 1130:2567353 1090:1037769 998:6312222 724:8244001 715:1205642 270:Where σ 1377:  1367:  1359:  1320:  1279:  1238:  1228:  1189:  1181:  1137:  1127:  1088:  1080:  1039:  1031:  996:  988:  950:  942:  888:  880:  831:  763:  722:  712:  633:than F 446:. If Q 1277:S2CID 1187:S2CID 1086:S2CID 1037:S2CID 994:S2CID 948:S2CID 886:S2CID 858:(PDF) 473:and F 462:and F 1375:PMID 1357:ISSN 1318:PMID 1236:PMID 1179:PMID 1135:PMID 1078:PMID 1029:PMID 986:PMID 940:ISSN 878:PMID 829:PMID 761:PMID 720:PMID 613:and 51:). Q 1365:PMC 1349:doi 1308:doi 1267:doi 1226:PMC 1218:doi 1214:171 1169:doi 1125:PMC 1117:doi 1113:180 1068:doi 1021:doi 978:doi 930:hdl 922:doi 918:110 870:doi 821:doi 790:doi 751:doi 710:PMC 702:doi 698:135 16:In 1394:: 1373:. 1363:. 1355:. 1345:29 1343:. 1339:. 1316:. 1304:95 1302:. 1298:. 1275:. 1263:14 1261:. 1257:. 1234:. 1224:. 1212:. 1208:. 1185:. 1177:. 1165:31 1163:. 1159:. 1147:^ 1133:. 1123:. 1111:. 1107:. 1084:. 1076:. 1064:21 1062:. 1058:. 1035:. 1027:. 1017:17 1015:. 992:. 984:. 974:14 972:. 960:^ 946:. 938:. 928:. 916:. 912:. 898:^ 884:. 876:. 866:17 864:. 860:. 853:ST 841:^ 827:. 817:15 815:. 811:. 786:17 784:. 759:. 747:17 745:. 741:. 718:. 708:. 696:. 692:. 680:^ 635:ST 631:ST 623:ST 603:ST 601:-F 599:ST 579:ST 571:ST 563:ST 559:ST 551:ST 543:ST 535:ST 523:ST 521:-F 519:ST 511:ST 507:ST 499:ST 495:ST 491:ST 487:ST 485:-F 483:ST 479:ST 475:ST 471:ST 464:ST 460:ST 454:, 452:ST 448:ST 440:ST 436:ST 424:ST 422:–F 420:ST 412:ST 410:-F 408:ST 388:ST 276:ST 195:GW 109:GB 105:ST 97:ST 93:ST 81:ST 75:. 71:ST 69:–F 67:ST 57:ST 53:ST 49:ST 47:(F 37:ST 24:ST 20:, 1381:. 1351:: 1324:. 1310:: 1283:. 1269:: 1242:. 1220:: 1193:. 1171:: 1141:. 1119:: 1092:. 1070:: 1043:. 1023:: 1000:. 980:: 954:. 932:: 924:: 892:. 872:: 835:. 823:: 796:. 792:: 767:. 753:: 726:. 704:: 609:( 541:Q 418:Q 406:Q 362:2 357:W 354:G 346:2 343:+ 338:2 333:B 330:G 319:2 314:B 311:G 301:= 296:T 293:S 289:Q 272:T 254:2 249:T 239:T 236:S 232:Q 228:2 225:= 220:2 215:W 212:G 177:2 172:T 164:) 159:T 156:S 152:Q 145:1 142:( 139:= 134:2 129:B 126:G 91:Q 65:Q 22:Q

Index

quantitative genetics
genetic differentiation
quantitative trait
fixation index
genetic locus
divergent selection
Sewall Wright
Hardy-Weinberg Equilibrium
additive genetic effects
linkage disequilibrium
common garden experiments
phenotypic
genetic drift
balancing selection
dominance
population structure
type 1 errors
invasion
natural selection
ecological restoration
whitebark pine
Brachypodium sylvaticum
range expansion
Antirrhinum majus
subspecies
F-statistics
Quantitative genetics
Conservation genetics
Divergent selection
Genetic diversity

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