Figure 1.

(A) The site frequency spectrum (SFS) for $\mathit{\Psi }\in \left\{0,0.1,0.2,0.3,0.4,0.5\right\}$, derived from values averaged over 100 replicate simulations at $N=1000$ with sample size $n=250$. (B) The value of Tajima’s D for $0\le \mathit{\Psi }\le 0.25$ averaged across 100 replicate simulated populations with sample size $n=30$. As shown, offspring skew strongly biases commonly used summary statistics, even under equilibrium neutrality.