Which of the following is the initiator codon that also codes for methionine?a)UAAb)AUGc)UUUd)GGGCorrect answer is option 'B'. Can you explain this answer?

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Which of the following is the initiator codon that also codes for methionine?

a)
UAA
b)
AUG
c)
UUU
d)
GGG

Correct answer is option 'B'. Can you explain this answer?

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Most Upvoted Answer

Which of the following is the initiator codon that also codes for meth...

Correct Option - B

The correct answer is Option B - AUG

AUG functions as the universal start codon that signals the beginning of translation and codes for the amino acid methionine.

In prokaryotes, the initiator tRNA brings N-formylmethionine (fMet) to the ribosome while recognizing the AUG codon; in eukaryotes, the initiator tRNA brings an unmodified methionine, but the initiating codon remains AUG.

The other listed codons are not initiator codons: UAA is a stop codon, UUU codes for phenylalanine, and GGG codes for glycine, so they do not serve as start codons that specify methionine.

Therefore, AUG is the codon that both initiates translation and specifies methionine.

Answered by Dr. Ritesh Malhotra · View profile

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