Scientists have found that certain genes become turned on or off as a result of exercise mainly through a process called ________, in which tiny atoms attached themselves to the outside of a gene.
A) genotyping
B) methylation
C) glycolysis
D) hydroxylation

Question

Quizplus · Accepted Answer

The process described is methylation, in which tiny atoms (methyl groups) attach to the outside of a gene, thereby turning it on or off. Genotyping refers to identifying specific genetic variations in a person's DNA. Glycolysis is a metabolic process that breaks down glucose for energy. Hydroxylation is a process in which a hydroxyl group is added to a molecule.

Scientists Have Found That Certain Genes Become Turned on or Off