Epigenetic changes
A) can involve DNA methylation.
B) are due to nonhistone protein acetylation.
C) are due to changes in the genetic code.
D) are an example of positive control of translation.
E) are never reversible.

Question

Quizplus · Accepted Answer

Epigenetic changes can involve DNA methylation, which is the addition of a methyl group to the cytosine base of DNA. This can affect gene expression without changing the genetic code itself. Epigenetic changes are often reversible through environmental factors or changes in gene expression. The other options are incorrect: B is incorrect because nonhistone protein acetylation is not an epigenetic change; C is incorrect because epigenetic changes do not involve changes in the genetic code; D is incorrect because epigenetic changes do not involve translation; and E is incorrect because many epigenetic changes are reversible.

Epigenetic Changes