epigenetics

Definition

The study of the processes involved in the genetic development of an organism, especially the activation and deactivation of genes.

Etymology

Blend of epigenesis + genetics; coined by C. H. Waddington in 1942.

Example Sentences

• "Epigenetics deals with the regulation of genetic activity within a cell - which genes are switched on or off, and when it happens."
• "The nuts and bolts of how this happens revolves around the massively trendy field of “epigenetics,” revealing how early life experience causes long-lasting changes in gene expression in particular brain regions."

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