Figure 4
From: The origin of a novel gene through overprinting in Escherichia coli
Synonymous versus non-synonymous substitutions. a) Proportion of synonymous (pn) versus non-synonymous (ps) substitutions for yaaW sequences. The dotted oval indicate comparisons between group A and B sequences (y = 0.649x - 0.045; r2 = 0.578); b) Distribution of ps (black dots) and pn (white dots) against Kimura distance for yaaW genes. Arrows indicate comparisons between group A and B sequences; c) Number of pn versus ps values of yaaW sequences between groups (A, B and O), bars indicate standard deviation.