Number of genes for which positive selection is detected
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aClassification of topologies and branches following that in Figure 1. FSGD, fish-specific genome duplication.
bNumber of trees where the model A with foreground ω2 > 1 is significantly more likely than the model A with ω2 = 1, with multiple test correction by the q-value of Storey and Tibshirani (2003) over all tests performed. (LRT) Likelihood ratio test.
cThe number of trees with at least one branch where positive selection was significant.











