Coalescent tree of the psGBA haplotypes, for thepsGBA haplotypes compatible with the infinite-sites mutation model. The tree was computed using ${\widehat{\theta }}_{\text{ML}}$ , N_e = 8345, μ = 13.33 × 10⁻⁵ per generation and year, and a 20-yr generation time, through 2 × 10⁷iterations. Numbers along branches represent mutational events. The continents where the haplotypes are present are indicated. (SWA-E) Southwest Asia and Europe.