Elevated Evolutionary Rates among Functionally Diverged Reproductive Genes across Deep Vertebrate Lineages
Figure 1
Protein divergence versus functional class across vertebrate lineages. Boxplots show the distribution of dN, nonsynonymous substitutions per nonsynonymous site in seven functional classes for each of the five species, A. carolinensis, D. rerio, G. gallus, M. musculus, and X. tropicalis. The three tissue-specific classes are found on the top (nonshaded), tissue-expressed classes are below in grey, and the non-reproductive functional class is indicated on the bottom, in black. Asterisks on the right-hand side of a boxplot signifies a highly significant () difference in mean, as given by the Wilcoxon rank sum test, when compared to the non-reproductive class. No ovary-specific genes were identified in M. musculus.
