A mutation that converts an amino acid codon to a stop codon is a:
Correct Answer: Nonsense mutation
Description: Changes one codon for an amino acid into another codon for that same amino acid - Silent mutation
Codon for one amino acid is changed into a codon of another amino acid - Missense mutation
Codon for one amino acid is changed into a translation termination codon - Non-sense mutation
Reading frame changes downstream to the mutant site - Frameshift mutation.
A purine base replaced by another pyrimidine, or pyrimidine replaced by another purine -Transversion.
Key Concept
Nonsense mutation
A coding codon mutated to a nonsense codon result in premature termination of polypeptide chain.
Category:
Biochemistry
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