Lexic.us

2. Noun. (genetics) The study of heritable changes caused by the activation and deactivation of genes without any change in DNA sequence. ¹

¹ Source: wiktionary.com

Medical Definition of Epigenetics

1. The study of mechanisms involved in the production of phenotypic complexity in morphogenesis. According to the epigenetic view of differentiation, the cell makes a series of choices (some of which may have no obvious phonotypic expression and are spoken of as determination events) that lead to the eventual differentiated state. Thus, selective gene repression or derepression at an early stage in differentiation will have a wide ranging consequence in restricting the possible fate of the cell. (07 May 1998)

Lexicographical Neighbors of Epigenetics

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