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| Statistiche F (FST)× | Sweep di Selezione (D di Tajima)× | |
|---|---|---|
| Campo | Genetica | Genetica |
| Famiglia | Process / pipeline | Process / pipeline |
| Anno di origine≠ | 1951 | 1989 |
| Ideatore≠ | Sewall Wright | Fumio Tajima |
| Tipo≠ | Population differentiation measure | Neutrality test |
| Fonte seminale≠ | Wright, S. (1951). The genetical structure of populations. Annals of Eugenics, 15(4), 323–354. DOI ↗ | Tajima, F. (1989). Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics, 123(3), 585–595. DOI ↗ |
| Alias | FST, Wright's F-statistics, Population differentiation index | Tajima's D test, Selective sweep analysis, Neutrality test |
| Correlati | 4 | 4 |
| Sintesi≠ | 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. | 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. |
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