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Created page with "<p>Epigenetics is the study of heritable changes in gene function that do not involve changes in the DNA sequence. Epigenetics often refers to changes in a ch..."
<p>Epigenetics is the study of heritable changes in gene function that do not involve changes in the DNA sequence. Epigenetics often refers to changes in a chromosome that affect gene activity and expression, but can also be used to describe any heritable phenotypic change that does not derive from a modification of the genome, such as prions. Such effects on cellular and physiological phenotypic traits may result from external or environmental factors, or be part of normal developmental program.</p>