Figure 5.
Simplified stepping-stone model of four population groups. Details of genetic demographic history were ignored in the model, such as backward gene flows and genetic admixture, etc. The four continental population groups are North Eurasian (NEU), South Eurasian (SEU), African (AFR), and Asian (ASN). Divergence of African and non-African groups was assumed to be 5000 generations. We further assumed that NEU and SEU have a divergence time of 400 generations.
