International Journal of Evolutionary Biology / 2011 / Article / Fig 2

Research Article

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

Figure 2

Distribution of ratio of divergence between D. melanogaster-D. simulans versus D. yakuba-D. erecta. (a) Distribution of molecular-divergence log2 ( 𝑑 𝑁 1 / 𝑑 𝑁 2 ) to divergence-time ratio log2 ( 𝑇 1 / 𝑇 2 ), between D. melanogaster-D. simulans and D. yakuba-D. erecta. Colored circles represent 𝑑 𝑁 ratios, and gray circles represent 𝑑 𝑆 ratios. The upper limit of the clockwise category is given by the log2 ratio of divergence times (6.5/8.1) and the lower limit by the log2 ratio 4.3/12.7. (b) Relationship of 𝑑 𝑁 between D. melanogaster-D. simulans and D. yakuba-D. erecta. The regression lines for each rate categories are also plotted. (c) Relationship of 𝑑 𝑆 between D. melanogaster-D. simulans versus D. yakuba-D. erecta; color codes: red: accelerated, black: clock-like, green: slow-rate categories, and grey: 𝑑 𝑆 ratios.
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