Epigenetics
Epigenetics: 1. The study of heritable changes in gene function that occur without a change in the sequence of the DNA. For example:
The process of DNA methylation; and
The process of chromatin remodeling.
2. The study of certain processes that occur in embryonic development. For example:
X inactivation (the inactivation of one X chromosome in females); and
The phenomenon of gene silencing.
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