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Campbell Biology Chapter 16-17

Question:

What is the effect of a nonsense mutation in a gene?

A) It changes an amino acid in the encoded protein.

B) It has no effect on the amino acid sequence of the encoded protein.

C) It introduces a premature stop codon into the mRNA.

D) It alters the reading frame of the mRNA.

E) It prevents introns from being excised.
Answer:

C) It introduces a premature stop codon into the mRNA.

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Last update by mayur on 03/27/2014
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Campbell Biology Chapter 16 17
Campbell Biology Chapter 16-17
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Free Flashcard From Campbell Biology Chapter 16-17
Question: What is the effect of a nonsense mutation in a gene? A) It changes an amino acid in the encoded protein. B) It has no effect on the amino acid sequence of the encoded protein. C) It introduces a premature stop codon into the mRNA. D) It alters the reading frame of the mRNA. E) It prevents introns from being excised.
Answer: C) It introduces a premature stop codon into the mRNA.