4. A codon that specifies the amino acid Gly undergoes a single-base substitution to become a...

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4. A codon that specifies the amino acid Gly undergoes a single-base substitution to become a nonsense mutation. According to

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Answer 1

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Mutation that changes a codon in a gene to one of the three termination codon (UAA , UGA, or UAG) is called as nonsense mutation . GGA codes for glycine and if 1st G in the codon is substituted by U then it becomes UGA .

Since Guanine is substituted by uracil it means purine is replaced by a pYrimidine then it's a transversion.

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