A DNA mutation happens that causes the resulting mRNA strand to read "GGG" when it was supposed to read "GGC". What type of mutation is this?

Question

Responses

This is a missense mutation because the resulting amino acid does change, and therefore will have a significant effect on the protein.
This is a missense mutation because the resulting amino acid does change, and therefore will have a significant effect on the protein.

This is a frameshift mutation because it involves the insertion of a nucleotide.
This is a frameshift mutation because it involves the insertion of a nucleotide.

This is a silent mutation because the resulting amino acid does not change, and therefore will have no effect on the protein.
This is a silent mutation because the resulting amino acid does not change, and therefore will have no effect on the protein.

This is an inversion mutation because the sequence was flipped around.
This is an inversion mutation because the sequence was flipped around.

Answer 1

The correct response is:

This is a silent mutation because the resulting amino acid does not change, and therefore will have no effect on the protein.

In this case, both "GGC" and "GGG" code for the same amino acid, glycine. Therefore, the mutation does not alter the protein product, making it a silent mutation.

(Note: The first option incorrectly states that the resulting amino acid does change, which it does not in this case, since both codons code for glycine).