Fig. 3
Non-synonymous substitutions, ORF size and functional categories. In these plots, each dot represents a gene depicted in Fig. 4. a) Number of NSS per base pair (× 10− 3) and ORF size (bp) have shown moderate correlation (r = 0.51). The grey area corresponds to the 95% confidence interval, and highly conversed or highly diverse genes are shown as labelled outliers. b) Scatter plot showing how genetic diversity (NSS/bp) relates to gene functions. As shown, most highly diverse genes still have unknown functions. For the sake of clarity, the structural gene p10, which shows 53.85 NSS per base pair (× 10− 3), are not included in this plot. See Additional file 8 for quantitative data