Fig. 3: Evolutionary history of C. heheva. | Communications Biology

Fig. 3: Evolutionary history of C. heheva.

From: The genome of an apodid holothuroid (Chiridota heheva) provides insights into its adaptation to a deep-sea reducing environment

Fig. 3

a A species tree of 7 echinoderm species. In total, 988 single-copy orthologs were used to reconstruct the phylogenetic tree. The divergence time between species pairs was listed above each node, and 95% confidence interval of the estimated divergence time was denoted as blue bar. The numbers of protein families that were significantly expanded (red) and contracted (blue) (P < 0.05) in each species are denoted beside the species names. b Demographic history of C. heheva (blue) and A. japonicus (red). The changes of ancestral-population size of C. heheva and A. japonicus were inferred using the PSMC method. Time in history was estimated by assuming a generation time of 3 years and a mutation rate of 1.0 × 10−8.

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