Summary of a likelihood ratio test using PAML for positive selection in the <i>SnTox1</i> gene.

aAsterisks indicate which model resulted in a statistically higher likelihood score for the SnTox1 codon alignment. bP-value for the likelihood ratio test (LRT) between the log-likelihoods of comparable models. In both cases the null hypothesis is rejected in favor of the selection model. cSpecific codons within the amino acid sequence were tested for positive selection. Positively selected codons with a Bayes Empirical Bayes posterior probability higher than 0.95 are listed on the right half of the table [78].上标a用以标注在SnTox1密码子比对（codon alignment）中获得统计学意义上更高似然得分的模型。上标b为可比模型对数似然值的似然比检验（likelihood ratio test, LRT）所得P值，两种情形下均拒绝原假设，转而支持选择模型。上标c指针对氨基酸序列内特定密码子开展的正选择检验，本表格右侧列出了贝叶斯经验贝叶斯（Bayes Empirical Bayes）后验概率高于0.95的正选择密码子[78]。