Figure 3

Proportions of genes with evidence of positive selection among individual JCVI role categories. Only genes that showed no evidence for recombination were used to generate the data showed here. Bars indicate estimated standard error for the proportion of genes with evidence of positive selection in each role category; standard errors were calculated as the square root of p (1-p)/n, where p is the frequency of genes with evidence of positive selection in a given role category, and n is the total number of genes in a given role category. Among the 20 JCVI role categories, seven did not include genes with evidence of positive selection and are thus not included in this figure. For each role category, proportion of genes with evidence of positive selection in the overall test (TO) and each of the four branch specific tests (Ch# = Choleraesuis branch specific test; Ty# = Typhi branch specific test; Tym# = Typhimurium branch specific test; Pty# = Paratyphi A branch specific test) are shown.