Figure 3.

The difference between the expectation of the female X-chromosomal admixture fraction and its limit for $g\in \left[1,6\right]$ as a function of the difference between female and male contributions from $S_1$ for a single admixture event (Equation 15). As $g\to \mathrm{\infty },$ this quantity approaches zero. For small g, however, the limit $\left(2/3\right)s_{1,0}^{\mathrm{f}}+\left(1/3\right)s_{1,0}^{\mathrm{m}}$ (Equation 14) is a poor approximation. The difference oscillates so that the slope of the line is negative when g is odd and positive when g is even.