Codons representing the same amino acid or chemically similar amino acids tend to be similar in sequence, often differing only in the third base. This feature is called:

Question

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The feature described is known as third-base degeneracy, where codons for the same or similar amino acids have the same sequence of nucleotides in the first and second positions, but have different nucleotides in the third position.

Codons Representing the Same Amino Acid or Chemically Similar Amino