Epigenetic Marks

Definition

Epigenetic marks are chemical modifications to DNA that can turn genes on or off. They play a key role in development and heredity.

Related terms

DNA Methylation: A process by which methyl groups are added to the DNA molecule, often leading to a change in gene function.

Histone Modification: Changes to proteins called histones that help organize DNA within the cell nucleus; these changes can influence gene activity.

Genomic Imprinting: An epigenetic phenomenon where certain genes are expressed in a parent-of-origin-specific manner.