Fig. 2: Biological variation of ωC in a genome-scale dataset.
a, Phylogenetic relationships of the selected species. Supplementary Fig. 8a provides the complete phylogeny. The tree and divergence time estimates were obtained from timetree.org95. b, Temporal variation of convergence rates. The numbers of branch pairs (N) and Spearman’s correlation coefficient (ρ) are shown. The bin range was determined to assign an equal number of branch pairs to each bin. To reduce the noise originating from branches where almost no substitutions occurred, branch pairs with both OCN and OCS greater than 1.0 were analysed (that is, at least one convergent substitution each). Box plot elements are defined as follows: centre line, median; box limits, upper and lower quartiles; whiskers, 1.5 × interquartile range. c, Convergence rates depending on gene duplications. Branch pairs were categorized into speciation events (SS) and branch pairs after two independent gene duplications (DD) according to the presence of preceding gene duplications in no or both branches, respectively. Branch pairs with one preceding duplication were excluded from the analysis. Dashed lines indicate the theoretical expectation (= 1.0). Icon credits for panel a: PhyloPic.com.
