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| Selection Sweep (Tajima's D)× | F統計量 (FST)× | |
|---|---|---|
| 分野 | 遺伝学 | 遺伝学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1989 | 1951 |
| 提唱者≠ | Fumio Tajima | Sewall Wright |
| 種類≠ | Neutrality test | Population differentiation measure |
| 原典≠ | Tajima, F. (1989). Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics, 123(3), 585–595. DOI ↗ | Wright, S. (1951). The genetical structure of populations. Annals of Eugenics, 15(4), 323–354. DOI ↗ |
| 別名 | Tajima's D test, Selective sweep analysis, Neutrality test | FST, Wright's F-statistics, Population differentiation index |
| 関連 | 4 | 4 |
| 概要≠ | Tajima's D is a statistical test designed to detect selective sweeps—recent, rapid fixation of advantageous mutations—from patterns of genetic variation in DNA sequences. Developed by Fumio Tajima in 1989, this test measures deviations from neutrality by comparing different measures of DNA sequence diversity. A significant Tajima's D value indicates departure from neutral evolution, suggesting positive selection, population structure, or demographic events. | F-statistics are a family of measures developed by Sewall Wright to quantify population genetic structure and the degree of genetic differentiation between populations. FST, the most widely used F-statistic, measures the proportion of total genetic variation attributable to differences between populations versus within populations. FST ranges from zero (no differentiation) to one (complete differentiation). These statistics have become fundamental tools for understanding population structure, detecting population admixture, and analyzing the evolutionary forces shaping genetic variation. |
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