Biology
Grade-12
Easy
Question
What does a non-sense mutation do?
- Change one amino acid to a stop codon
- Change one amino acid to a different amino acid
- Change one amino acid to a start codon
- None of the above
Hint:
Change one amino acid to a stop kodon
The correct answer is: Change one amino acid to a stop codon
A nonsense mutation occurs in DNA when a sequence change gives rise to a stop codon rather than a codon specifying an amino acid.
The presence of the new stop codon results in the production of a shortened protein that is likely nonfunctional.
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