Figure 3.
Phylogenetic tree relating representative African, European, Oceanian, East Asian, and Native American populations based on high-density genetic marker data. For this analysis, Native American data used was restricted to genome segments of confirmed Native ancestry (determined as in Fig. 2). The tree branches are color-coded to represent the linguistic affiliation of the populations, as shown in the inset. Numbers in parentheses refer to sample size in each population. The length of the branches on this tree is proportional to a measure of genetic differentiation (FST). (From Reich et al. 2012; reprinted, with permission, from the author.)