Five genetic clusters according to STRUCTURE. Shown are the most likely number of clusters (K = 5) estimated without a priori information on population origin. A) Box plots of the likelihood across lnP(X|K) across numbers of clusters. The line inside the box represents the median of the likelihood distribution, the box lower and upper edges represent the 25th and 75th percentiles, respectively, the bars represent the 5th and 95th percentiles, and open circles are far outside values. B) Map showing distribution of each genetic cluster based on admixture values and the likelihood of K = 5.