synonymous substitutions rate Ks
non-synonymous substitution
relative frequency of synonymous codon
relative synonymous codon usage
同义密码子相对使用度
相对同义密码子用法
同义密码子相对使用
relative synonymous codon usage RSCU
synonymous codon repeat sequence
synonymous substitution
synonymous codon usage bias
relative synonymous radon usage
220(110) kV substations