Figure 2

Principal component plot of Y-SNP. (A) PC plot of all the population samples. DC (green stars) is closest to MP (purple crosses) and TA (blue crosses). All of the other groups including ST, HM, AA, and AT (red spots including triangles, squares and diamonds) are rather far removed from MP and TA, which indicates that DC is the only group that might be related to MP and TA. (B) PC plots of pooled samples. The ST, HM, AA, and AT samples were pooled according to the linguistic families. The DC samples were pooled according to the sub-families. MP and TA samples were pooled according to the geographic locations. Ethnic groups: AA, Austro-Asiatic speakers; AT, Altaic speakers; DC, Daic speakers; HM, Hmong-Mien speakers; MP, Malayo-Polynesian speakers; ST, Sino-Tibetan speakers; TA, Taiwan aborigines.