Question:
Which one of the following is a termination codon?
Which one of the following is a termination codon?
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Out of 64 codons, three do not code for any amino acid.
Updated On: Nov 13, 2026
- AUG
- UGU
- UAG
- UUA
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
The genetic code has 64 codons. Sixty-one code for amino acids and three act as stop signals.
Step 2: Stop codons
The three termination (nonsense) codons are UAA, UAG and UGA.
Step 3: Compare the options
AUG is the start codon for methionine, and UGU and UUA code for cysteine and leucine. UAG is a termination codon.
Final Answer:
UAG is a termination codon. \[ \boxed{\text{(C) }\text{UAG}} \]
The genetic code has 64 codons. Sixty-one code for amino acids and three act as stop signals.
Step 2: Stop codons
The three termination (nonsense) codons are UAA, UAG and UGA.
Step 3: Compare the options
AUG is the start codon for methionine, and UGU and UUA code for cysteine and leucine. UAG is a termination codon.
Final Answer:
UAG is a termination codon. \[ \boxed{\text{(C) }\text{UAG}} \]
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