Figure 4.
Effect of inheritance and population size on the evolution of sexual isolation. The proportion of simulated pairs of populations with substantial isolation (JI > 1.6) is shown as a function of effective populations size (Ne) for different values of additive genetic variance of the male trait (G) and genetic correlation between the male trait and female preference (γ). The results are for 10,000 replicate pairs after 10,000 generations of evolution by drift. Values of other parameters: H = G, γ2 = 50, ν2 = 5.