Fig. 3

ROC curves of CEGA and BetaScan2 for detecting balancing selection signals at different selection onset times Ts = 80,000 and 160,000 (after the species split) and Ts = 240,000 and 280,000 (before the species split). The other parameters are selection intensity \(s=0.001\) and overdominance coefficient \(h=2\); the haploid sample sizes are \({n}_{1}={n}_{2}=20\)