BPSC – Combined Competitive Examination · Question 143
Which of the following is a nonsense codon?
Show answer & explanation
Answer: (A) UAA
Explanation
The nonsense (stop) codons are UAA, UAG and UGA.
- (A) Correct
Correct: UAA (ochre) is a stop codon.
- (B) Incorrect
Wrong: AUG is the start codon (methionine).
- (C) Incorrect
Wrong: UUU codes for phenylalanine.
- (D) Incorrect
Wrong: UGC codes for cysteine.