Rats neglected by their mothers when they are pups show a heightened stress response throughout their lives. This is an example of a(n) _______ effect.
A) ontogenetic
B) epigenetic
C) somatic intervention
D) reductionist

Question

Quizplus · Accepted Answer

This is an example of an epigenetic effect, as it involves long-lasting changes to gene expression without alterations to the DNA sequence itself. The neglect experienced during early life alters the methylation and acetylation of histones, leading to changes in gene expression and a persistent stress response. The other answer choices are not applicable in this scenario.

Rats Neglected by Their Mothers When They Are Pups Show