What Situation Results from a Frameshift Mutation

Question

What situation results from a frameshift mutation?
A) One or two nucleotides are added or deleted in a DNA strand.
B) Amino acids are assembled into normal, functional proteins.
C) The DNA is always modified in such a way that protein synthesis is prevented.
D) An amino acid is substituted with a similar one that has no effect on protein synthesis.

Accepted Answer

A frameshift mutation occurs when one or two nucleotides are added or deleted from the DNA strand, causing a shift in the reading frame of the gene. This results in a completely different amino acid sequence downstream from the mutation, which can lead to a non-functional protein.