medical Definition of epigenetics
- At its most basic, epigenetics is the study of changes in gene activity that do not involve alterations to the genetic code but still get passed down to at least one successive generation.
- —John Cloud, Time, 18 Jan. 2010
- Epigenetics is the study of the chemical groups that stick to DNA and act as switches to turn genes on and off.
- —New Scientist, 7 July 2006
Seen and Heard
What made you want to look up epigenetics? Please tell us where you read or heard it (including the quote, if possible).