Proportion of amino acid substitutions driven to fixation by positive selection (α) and divergence at nonsynonymous and synonymous sites (dN/dS) for genes within and outside differentiated regions.

aOnly includes genes located within sampled regions in our study and exclude genes located in regions of differentiation identified using only one of the statistics.bMethod of Eyre-Walker and Keightley [73]. 95% confidence intervals of α estimates were obtained using 200 bootstrap replicates.cOnly genes with one-to-one orthology relationships were considered. Standard deviation is shown in parenthesis.Proportion of amino acid substitutions driven to fixation by positive selection (α) and divergence at nonsynonymous and synonymous sites (dN/dS) for genes within and outside differentiated regions.