A Frameshift Mutation Could Result From

Question

A frameshift mutation could result from
A) a base insertion only.
B) a base deletion only.
C) a base substitution only.
D) deletion of three consecutive bases.
E) either an insertion or a deletion of a base.

Accepted Answer

A frameshift mutation occurs when a nucleotide is either inserted or deleted from the DNA sequence, causing a shift in the reading frame. Both choices A and B would result in a frameshift mutation, while choice C would only result in a missense or silent mutation depending on the substitution. Choice D would result in the loss of a single amino acid but not a frameshift mutation.