Figure 4:

Differences between mean coalescence times of two X chromosomes sampled in separate individuals under sib mating. Differences are plotted as a function of the number of mating pairs (N) and the sib mating proportion (c₀). (A) $\mathbb{E}\left[V_{ff}\right]-\mathbb{E}\left[V_{mm}\right]$. (B) $\mathbb{E}\left[V_{mf}\right]-\mathbb{E}\left[V_{ff}\right]$. The panels visualize Eqs. 22–24.