Biochemistry Although 61 codons code for aminoacids, only 20 amino acids are naturally occurring. This feature of the genetic code is known as: A Transcription B Degeneracy C Mutation D Unambiguity 💡 Explanation Although 61 codons code for aminoacids, only 20 amino acids are naturally occurring. This feature of the genetic code is known as: ✓ Correct Answer: B. Degeneracy