ML estimates of the present models with the respective selective constraints for the 1-PAM amino acid substitution matrices of cpREV and mtREV.

aIn all models, equal codon usage () is assumed. If the value of a parameter is parenthesized, the parameter is not variable but fixed to the value specified.b for cpREV, and for mtREV; see text for details.c #parameters with for cpREV, and for mtREV; see text for details.dNote that these ratios are not the ratios of the rates per site but per codon; see text for details.a. 所有模型均假定密码子使用频率均等（原文此处未补充额外说明）。若参数值带有括号，则该参数并非可变参数，而是被固定为括号内指定的取值。b. 叶绿体替换模型（cpREV）与线粒体替换模型（mtREV）的相关细节详见正文。c. 叶绿体替换模型（cpREV）与线粒体替换模型（mtREV）的参数数量相关细节详见正文。d. 请注意，此处的比值并非各位点的替换率比值，而是各密码子的替换率比值，相关细节详见正文。