Fig. 3.

An estimated history of sampled Drosophila melanogaster populations. (A) For the focal population tree identified from distance relationships and model likelihood comparisons, median arm point estimates are depicted for each estimated divergence time and population size. (B) The locations of the included populations are indicated. Colors of population branches (A) and circles (B) indicate populations and lineages within the apparent ancestral range (red), and those in regions occupied by roughly 12 kya (yellow) and by ∼2 kya (blue).