# DNA & Chromosomal Modifications (Epigenetics) Epigenetics are heritable changes to [[gene expression]] that do not involve direct changes to the DNA sequence **Epigenome:** an individual's pattern of chromatin modifcations ## DNA Modifications ### DNA Methylation ### Histone Acetylation ![[Pasted image 20240725042154.png|425]] ## Chromosomal Modifications ### Inactivation of X Chromosomes ![[Inactivation of X Chromosomes.png|300]]