Fig. 1

PCA of SAS-AP and 1000GP3 samples. Each symbol represents one individual. PC1 and PC2 are shown on the X and Y axis, respectively. The percentage of variance explained by each PC is labeled on the axis. The map shown in the figure is adapted from https://commons.wikimedia.org/wiki/File:World_map_blank_without_borders.svg where permission is granted under a creative commons license