Observe the table and answer the given question:
Identify the amino acids with one codon each?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Methionine and Tryptophan
In the codon table, methionine has only AUG and tryptophan only UGG. Every other amino acid has two or more codons.
Option (4) Methionine and Tryptophan — Correct. Most amino acids are coded by more than one codon (the code is degenerate). Only methionine (AUG) and tryptophan (UGG) have a single codon each.