ipPCA subpopulation assignment.

<p>The amalgamated worldwide dataset of 1842 individuals was analyzed by ipPCA. The Thai ethno/geographical labels pertaining to datasets 2 and 3 are italicized; all other labels are the same as those shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0079522#pone-0079522-g001" target="_blank">Figure 1</a>. Individuals were assigned into 24 genetically distinct subpopulations (SP1 to 24) by ipPCA. 20 Thai individuals that could not be assigned to subpopulations are not shown. The height of each subpopulation bar is proportional to the number of assigned individuals.