Epigenetics are the mechanisms that control the expression of genes without changing the underlying DNA genetic code. What is now realized is that this can be inherited itself. It is not just unique to a somatic cell type that affects how that cell develops.
External References
- , "Epigenetics: Can we control our genes?", BBC Video Story
- Fessele KL, Wright F. "Primer in Genetics and Genomics, Article 6: Basics of Epigenetic Control". Biol Res Nurs. 2018 Jan;20(1):103-110. doi: 10.1177/1099800417742967.