Q.

Which of the following is not a stop codon?

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a

UAA

b

UAC

c

UAG

d

UGA

answer is B.

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Detailed Solution

UAC is not a stop codon. It codes for tyrosine amino acid. The last codon of a functional gene which helps in termination of the polypeptide chain, is termed as stop or termination codon. These are UAA, UAG and UGA. These codons do not have tRNA to be translated.

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