Figure 7.

Sex-specific contributions estimated from the data of Cheng et al. (2009). (A) The range, median, and 25th and 75th percentiles of the sets of sex-specific contributions for which the Euclidean distance D (Equation 25) between model-predicted admixture and observed admixture from Cheng et al. (2009) was at most 0.01. The range of values for $s_2^{\mathrm{f}}$ and $s_2^{\mathrm{m}},$ the contributions representing Europeans $\left(S_2\right),$ is smaller than that representing Africans $\left(S_1\right).$ (B) Female contributions as a function of D. (C) Male contributions as a function of D. For B, the male contributions are fixed at their median values producing $D\le 0.01,$ $\left(s_1^{\mathrm{m}},h^{\mathrm{m}},s_2^{\mathrm{m}}\right)=\left(0.47,0.34,0.19\right).$ For C, the female contributions are fixed in a corresponding manner, at $\left(s_1^{\mathrm{f}},h^{\mathrm{f}},s_2^{\mathrm{f}}\right)=\left(0.64,0.29,0.07\right).$ Each side of the triangles in B and C represents one of three parameters that sum to 1, $\left(s_1^{\mathrm{m}},h^{\mathrm{m}},s_2^{\mathrm{m}}\right)$ and $\left(s_1^{\mathrm{f}},h^{\mathrm{f}},s_2^{\mathrm{f}}\right)$ in B and C, respectively. Parameter values were tested at increments of 0.01 for each quantity.