在这些多态性变异位点中，出现在遗传密码子第一和第二位上的碱基替换率分别为36.76%和35.29%。

Among the polymorphic sites, the nucleotide substitutions in the first and second positions of the codons accounted for 36.76% and 35.29%, respectively.

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从生命开始使用遗传密码到现在，核苷酸的四个字母的三重组合有64个可能，这些遗传“字词”被称为密码子。

In the genetic code that life has used up to now, there are 64 possible triplet combinations of the four nucleotide letters; these genetic "words" are called codons.

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有不止一个密码子来指定同样的氨基酸。用于一种遗传基因。

Having more than one codon specify the same amino acid. used of a genetic code.

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