Epigenetics is a term in biology used today to refer to features such as
chromatin and
DNA modifications that are stable over rounds of
cell division but do not involve changes in the underlying
DNA sequence of the organism. These epigenetic changes play a role in the process of
cellular differentiation, allowing cells to stably maintain different characteristics despite containing the same genomic material. Epigenetic features are inherited when cells divide despite a lack of change in the DNA sequence itself and, although most of these features are considered dynamic over the course of development in multicellular organisms, some epigenetic features show transgenerational inheritance and are inherited from one generation to the next.
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