Biochemistry If a 4 nucleotides sequence code for an amino acid instead of 3, then theoretically how many unique amino acids could be coded by such a system? A 16 B 64 C 128 D 256 💡 Explanation If a 4 nucleotides sequence code for an amino acid instead of 3, then theoretically how many unique amino acids could be coded by such a system? ✓ Correct Answer: D. 256