单词：codon usage
codon usage的用法和样例：
例句
- Correspondence analysis has frequently been used for codon usage studies.对应分析法在密码子用法的研究中频繁使用。
- This article reviews the codon bias and some strategies for codon optimization.本文就密码子的偏好性及密码子优化的一些策略简要的进行了综述。
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