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Question

Ochre mutations are mutations of .......... codon.

A
UAG
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B
UAA
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C
AUG
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D
UGA
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Solution

The correct option is A UAA
An ochre mutation is a nonsense mutation that changes a sense codon (one specifying an amino acid) into the stop codon UAA, causing premature termination of the polypeptide chain during translation. The mutation, the codon, and the mutant are all called as ochre.

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