Figure 1From: Similar rates of protein adaptation in Drosophila miranda and D. melanogaster, two species with different current effective population sizesNeutral diversity is reduced in fast evolving protein-coding genes. The level of synonymous diversity (Ï€s) is plotted against the rate of amino-acid evolution (Ka) at X-linked loci in D. miranda. The solid line represents the least squares fit to a recurrent hitchhiking model.Back to article page