Question

A mutation occurs in a sequence of DNA. How could the DNA mutation affect the protein produced?
A.
The protein would cause other proteins to mutate.
B.
The structure of the protein could be changed.
C.
The chromosomes in the protein could be changed.
D.
The mutation could change every protein in the cell.

Answer 1

B. The structure of the protein could be changed.

Explanation: A DNA mutation can alter the mRNA codon(s), leading to a different amino acid sequence (missense), a premature stop (nonsense), or no change (silent). Changes in amino acid sequence can alter a protein’s primary structure and thus its folding and function.