>>11671192"In this study, we analyzed genotype data from several different yet complementary perspectives:
A global view of individual ancestry, genetic relatedness among populations, and fine-scale
population structure. Historically, populations that have migrated away from each other often
settle in geographically distinct regions, and the longer the time since divergence, the less
genetically similar they tend to be. Consequently, genetic differentiation between populations
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reflects both history and geography. Using the same genetic distance matrix, we constructed a
phylogenetic tree (Fig. 1B) to represent the likely historical order of population divergence, and
used the PCA plots to depict the genetic relatedness among the populations (Fig. 2, also Figs. S3-
5). "
