Definitions

1. adjective

relating to or resulting from the interaction of genes and environmental factors that affect the development and function of an organism without a change in the DNA sequence

“The epigenetic changes caused by environmental toxins can lead to disease.”

2. noun

the study of heritable changes in gene function that occur without a change in the underlying DNA sequence

“She earned her PhD in epigenetic biology and went on to work at a prominent research institute.”