Log-likelihood values and parameter estimates under site models for the nine mammalian BRCA1 genes.

Note.— p: Number of parameters including 15 branch lengths in the tree (Figure 4). Estimates of κ range from 3.4 to 3.6 among models. Sites potentially under positive selection are listed for different models, with the human sequence used as reference. The posterior probability P that a site is from the positive-selection class is calculated using BEB [17].

注：p为参数总数，包含该系统发育树中的15个分支长度（图4）。各模型中κ的估计值介于3.4至3.6之间。针对不同模型列出了潜在受正选择作用的位点，并以人类序列作为参考序列。采用BEB方法[17]计算某位点属于正选择类别的后验概率P。