Fig. 2.

Equilibrium allele frequencies for numerical projections across values of the b parameter (from 0 to 1, in increments of 0.02), and for select values of increasing γ. Each vertical slice along the x-axis of each graph represents, for a particular value of b, the final allele frequencies for the preference (P₂), coercion (C₂), and resistance (R₂) alleles from a numerical projection of the model like the ones shown in Figure 1 (again, s_t=s_c=0.1 and a=23). Shaded boxes above the graphs are meant to aid in interpretation of the outcome domains: I is free female choice in the absence of male coercion; II is female preference restricted by male coercion; III is extensive reclamation of the efficacy of female preference through resistance, though coercion remains; IV is the absence of female preference and the domination of the mating system by male coercion.