Figure 7.—

Genic selection estimates of the selection parameter, γ, obtained by simulating polymorphism and divergence data with varying degrees of dominance relations. Dashed lines indicate the true value of γ in the simulation. Note that, for γ = −5, the estimate γ̂ is biased even in the case of genic selection because we conditioned on observing at least one segregating site and one fixed difference in the sample. For each simulation, the divergence time, τ, was fixed at τ = 10, n = 25, and θ = 50. Error bars indicate the 95% confidence limits of γ̂.