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Question

UAA, UAG and UGA are known as

A
start codons
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B
stop codons
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C
initiator codons
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D
coding codons
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Solution

The correct option is B stop codons
UAA, UAG and UGA are the stop codons, and do not code for amino acids. They are also known as termination codons or nonsense codons, and act as signals on the mRNA to stop protein synthesis.

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