Figure 2

The results of Bayesian clustering analysis of recombining genes using Structure2 (Pritchard et al., 2000). The horizontal axis shows the number of clusters (K). (a) The posterior probability of the data, given the number of clusters, averaged across 10 runs with s.d. between runs. (b) The second order rate of change of the likelihood function (ΔK) with respect to K (Evanno et al., 2005).