Figure 2.

Examples of posterior densities of the locus-specific hyperparameter δ_j for neutral markers (in gray) and positively selected loci (in red). The “centering” distribution (dashed line) is derived from the hyperdistribution of the genome-wide effect of selection, λ, and is defined as an exponential distribution $\sim \text{exp}\left({\overline{x}}_{\lambda }^{-1}\right)$, where ${\overline{x}}_{\lambda }$ is the posterior mean of λ, as estimated from the MCMC.