Is Speciation Accompanied by Rapid Evolution? Insights from Comparing Reproductive and Nonreproductive Transcriptomes in Drosophila

Figure 3

Distribution of ratio of divergence between D. simulans-D. sechellia and D. yakuba-D. erecta. (a) Distribution of ratio of amino acid replacement substitutions in separate clades log₂ (𝑑_𝑁1/𝑑_𝑁2) to divergence time (according to Kliman et al. [33]) ratio log₂ (𝑇₁/𝑇₂), D. simulans-D. sechellia and D. yakuba-D. erecta. (b) Re-evaluation of divergence times between these species. 𝑑_𝑁 ratios are plotted in colors, and 𝑑_𝑆 ratios are plotted in grey. Color codes: red circles accelerated evolution, black: clock-like, green: slow evolution categories, grey: 𝑑_𝑆 ratios.

(a)

(b)