Fig. 4.

Admixture time estimated with different thresholds. (a) Admixture time estimated under Scenario (I), where α₁ = α₂ = 0.3 and t₂ = 40, T = 60; and (b) admixture time estimated under Scenario (III), where α₁ = α₂ = 0.3 and t₂ = 40, T = 60. X-coordinate is the admixture time in generations ago, with 0 being the present time. Y-coordinate represents the thresholds, and the color of the points indicates the ancestral population. The dashed lines represent the simulated admixture time. For the first wave admixture, two estimations of admixture time are presented