関連ワード:  which codons code for amino acids    which codons do not code for amino acids    which codons code for the amino acid serine    codons that code for multiple amino acids    contains codons that code for amino acids    which codon is the code for amino acid valine    which codon does not code for amino acid    which codon codes for only one amino acid    which codon code methionine amino acid    number of codons that code for amino acids