Figure 5:

Variance of ancestry under a constant-admixture scenario with assortative mating in producing g ≥ 2. (A) Autosomes, $\mathbb{V}\left[H_{1,g,\delta }^A\right]$. (B) X chromosomes in a female, $\mathbb{V}\left[H_{1,g,f}^X\right]$. (C) X chromosomes in a male, $\mathbb{V}\left[H_{1,g,m}^X\right]$. Each panel considers positive assortative mating (greens), negative assortative mating (purples), and random mating (black dashed). The plots use eqs. (20), (21), and (29)–(32). We fix c₁₁ = c₂₂ and c_1h = 0, with $s_1^f=s_1^m=s_2^f=s_2^m=0.2$. For initial conditions, $s_{1,0}^f=s_{1,0}^m=s_{2,0}^f=s_{2,0}^m=0.5$ and c_11,0 = 0. Positive assortative mating increases the variance relative to a randomly mating population, whereas negative assortative mating decreases it.