Q. Which of the following is a non-sense codon?

Correct Answer: c) UAA

Explanation:
– Nonsense codons (stop codons) signal termination of protein synthesis and do not code for any amino acid. The three stop codons are UAA, UAG, and UGA.
– UAA is one of these stop codons.
– By contrast:
– UUU codes for phenylalanine (sense codon).
– AUG is the start codon and codes for methionine.
– UGC codes for cysteine (sense codon).