Figure 3.
A, Distribution of percentage of European ancestry (Mi) in 109 African American samples genotyped at 2,154 MALD markers (mean ± SD = 20% ± 8%). B, Distribution of estimated number of generations since admixture (λi) for 109 African Americans (mean ± SD = 6.3 ± 1.1). All estimates are generated by the ANCESTRYMAP software from the accompanying article by Patterson et al. (2004 [in this issue]). We emphasize that the number of “generations since admixture” is an average across a person’s lineages, since mixing between Africans and Europeans has occurred over many generations.