Ans.
Protein synthesis involves transcription (formation of RNA molecules) and translation (formation of polypeptide chain). The information for the protein synthesis is present in nucleic acids as triplet bases, called codons or genetic codes.
During translation, each codon codes for a specific amino acid. There are total sixty-four codons, made by different combinations of four nucleotide bases (adenine, guanine, cytosine, and thymine), out of which, sixty-one codons code for amino acids and three codons act as stop codon.
Thus, the correct answer is 'codon or genetic code.'