Table 2 Case-study results. Number of detected genes under positive selection after running GwideCodeML twice, one for each branch, using the three built-in nested models. *1. In site models, there is no dN/dS ratio variation among branches, therefore, it was run once
ModelNested models (null vs. alternative hypotheses)No. genes under positive selection in Sk branchNo. genes under positive selection in Sc branch
BranchM0 vs. two-ratios8331
Branch-siteMAnull vs. MA13796
SiteM1a vs. M2a32*132*1