Figure 8:

Reduction factors for mean autosomal and X-chromosomal pairwise coalescence times under various types of unilateral and bilateral first-cousin mating, plotted as a function of the consanguinity rate (c₁). (A) Reduction factors for $\mathbb{E}\left[T_m\right]$, $\mathbb{E}\left[T_f\right]$, and $\mathbb{E}[U]$ ($\mathbb{E}\left[T_m\right]$ for autosomes only). (B) Reduction factors for $\mathbb{E}\left[V_{mm}\right]$, $\mathbb{E}\left[V_{mf}\right]$, and $\mathbb{E}\left[V_{ff}\right]$. See Table 1 for formulae.