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Question
The codons used in chain termination are ______.
Options
UAG, UAA, AUG
GAT, AAT, AGT
AGT, TAG, UGA
UAA, UAG, UGA
MCQ
Fill in the Blanks
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Solution
The codons used in chain termination are UAA, UAG, and UGA.
Explanation:
These three codons are known as stop codons or nonsense codons. During translation (protein synthesis), they signal the termination of the polypeptide chain. Unlike the other 61 codons in the genetic code, these three do not code for any amino acid; instead, they are recognised by release factors that trigger the ribosome to release the newly formed protein.
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