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. 2011 Dec 1;7(12):e1002395. doi: 10.1371/journal.pgen.1002395

Figure 4. Evidence for positive selection in three genes.

Figure 4

At each codon, the posterior probability of positive selection is plotted for D. melanogaster (dark grey line) and D. simulans (light grey line). To illustrate the signal in the data, the figure is superimposed with the sample frequency of polymorphisms in the two species (vertical bars) and substitutions along the two lineages (filled circles, above). The colors indicate synonymous variants in D. melanogaster (dark green) and D. simulans (light green) and non-synonymous variants in D. melanogaster (red) and D. simulans (orange).