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Question

Which one of the following triplet codons is a chain termination codon?

A
UGU
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B
AAU
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C
UUG
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D
UAG
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Solution

The correct option is A UAG
In the genetic code, a codon is made up of three nucleotides within messenger RNA. The codon which signals a termination of translation is called as termination codon or stop codon. Stop codons signal the termination of this process by binding with release factors, which cause the ribosomal units to disassociate, releasing the amino acid chain. For example, UAA, UGA and UAG.

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