Types of mutations include all of the following EXCEPT
A) single nucleotide substitutions.
B) insertions.
C) deletions.
D) trinucleotide repeats.
E) methylation of DNA.

Question

Quizplus · Accepted Answer

Methylation of DNA is not considered a type of mutation. Methylation is a normal process in which a methyl group is added to a base on a DNA molecule and can affect gene expression, but it does not change the genetic sequence. The other answer choices (single nucleotide substitutions, insertions, deletions, and trinucleotide repeats) are all types of mutations that can alter the genetic sequence.

Types of Mutations Include All of the Following EXCEPT