The process of regulating gene expression without altering the DNA sequence.
(Greek, epi = above, upon) gene silencing that occur without changes in the genes (DNA) sequence, this changes can also be inherited. (More? Molecular Mechanisms - Epigenetics | DNA Introduction | Science - Epigenetics: A web tour | The Welcome Trust - Epigenetics)
the study of changes in gene silencing that occur without changes in the genes themselves. Many genes in the body are permanently turned off as part of normal development. But sometimes that process goes awry, turning off genes that should otherwise remain active. This field of study and its associated therapies aims to switch these genes back on. It is a new approach to the treatment of aging, inherited diseases and cancer.