Madison drank contaminated water,which contained toxic molecules that blocked the expression of some of her genes.As a result,she is now highly allergic to certain foods.This best illustrates the impact of
A) digestive enzymes.
B) stress hormones.
C) epigenetic marks.
D) natural selection.

Question

Quizplus · Accepted Answer

Epigenetic marks refer to changes in gene expression that occur without altering the DNA sequence. In this scenario, the toxic molecules in the contaminated water likely caused epigenetic modifications to Madison's genes, leading to her increased sensitivity to certain foods. The other options (digestive enzymes, stress hormones, and natural selection) do not directly relate to the changes in gene expression that are likely responsible for Madison's allergic reactions.

Madison Drank Contaminated Water,which Contained Toxic Molecules That Blocked the Expression