Mismatch distribution results.

†indicates significance at α = 0.05.Tau (τ) and 90% confidence intervals of simulations under the model of sudden expansion for each population are shown. Harpending's raggedness index (r), time since population expansion in years (t), and associated 90% confidence intervals are shown for all populations where the sudden expansion hypothesis could not be rejected. Time since expansion (t) was estimated using the fossil-calibrated substitution rate (6.03×10−9 subs/yr). Site abbreviations correspond to locations in Figure 1.