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	Statistiche F (FST)	Contrasti Filogenetici Indipendenti
Campo	Genetica	Genetica
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1951	1985
Ideatore	Sewall Wright	Joseph Felsenstein
Tipo	Population differentiation measure	Statistical comparative method
Fonte seminale	Wright, S. (1951). The genetical structure of populations. Annals of Eugenics, 15(4), 323–354.	Felsenstein, J. (1985). Phylogenies and the comparative method. American Naturalist, 125(1), 1–15.
Alias	FST, Wright's F-statistics, Population differentiation index	PIC, Contrasts method, Felsenstein's contrasts
Correlati	4	3
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.	Phylogenetic Independent Contrasts (PIC) is a comparative statistical method that tests for associations between traits across species while accounting for shared evolutionary history. Developed by Joseph Felsenstein in 1985, PIC solves a fundamental problem in comparative biology: related species share traits due to common ancestry, not independent evolution, which violates the statistical assumption of independence. By comparing trait differences between sister species pairs, PIC removes the confounding effects of phylogenetic relatedness and enables robust evolutionary inferences.