Fig. 2
From: Genetic signals of high-altitude adaptation in amphibians: a comparative transcriptome analysis
Summary results from comparative analysis of transcriptome sequence data. a Phylogenetic relationships of the study species. “High” indicates high-altitude lineages and “low” indicates low-altitude lineages. Numbers above the lines are numbers of putative positively selected genes (PSGs), and numbers below the lines are dN/dS ratios. Bootstrap proportions (BSP) from 1000 replications are also presented. b Distributions of dN/dS ratio estimated from 1000 bootstrap replications of the transcriptome-wide alignment for the four target branches. The high-altitude branches do not show significantly higher overall dN/dS ratios compared to their low-altitude relatives. c Average dN/dS ratios of gene clusters according to GO categories for the two high-altitude branches. Black lines represent the global average dN/dS ratios for each branch. High dN/dS categories shared by the two high-altitude lineages are marked by rectangles