The variance in allele sizes ( Vp ) is relatively variable among population groups, especially so for the Frequency dataset ( Figure 2A ), and the differences for this last dataset are indeed highly significant (Kruskal-Wallis test, P<0.001 ).
For the Frequency dataset, He shows a decreasing trend from Africa to America, and a rough division can be established between Africa, Southwest Asia and Europe on one side, and the rest of Asia and America on the other, as more significant pairwise differences are seen between groups from these two main areas ( Table S3B ).