Definition of Epigenetics:
The study of heritable changes in gene function that occur without a change in the DNA sequence.
publications.nigms.nih.gov/thenewgenetics/glossary.html
the study of changes in gene silencing that occur without changes in the genes themselves. Many genes in the body are permanently turned off as ...
ccnt.hsc.usc.edu/glossary/
Epigenetics is the study of processes that establish metastable (ie, somatically heritable) states of gene expression without altering the DNA ...
www.annalsnyas.org/cgi/content/full/983/1/321
The study of inherited characteristics that lie outside of the genome in organisms (from the word epi, meaning “outside” or “above,” originally from the Greek).
www.constellationpharma.com/Epi_glossary.htm
Describes a heritable effect on chromosome or gene function that is not accompanied by a change in DNA sequence. It is accompanied by modifications of chromatin or DNA.
www.nature.com/nrg/journal/v5/n7/glossary/nrg1378_glossary.html
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 ...
en.wikipedia.org/wiki/Epigenetics
The study of the processes involved in the genetic development of an organism, especially the activation and deactivation of genes; The study of heritable changes caused by the activation and deactivation of genes without any change in DNA sequence
en.wiktionary.org/wiki/epigenetics