Figure 4

The SNP density distribution (joined gray dots), Poisson distribution with mean 90 (large gray dots), simulated distribution of SNPs with ρ = θ = 90 (gray line), and the Maximum Simulated Likelihood estimate from the coalescent simulations with ρ ~ $\stackrel{\_}{R}$θ _i ~ $w_{{\theta }_i}^{(6.7,14.9)}$ and (black line).