# epigenetic

/ˌɛpədʒəˈnɛtɪk/ (US) · CEFR C1 · Adjective

Source: https://englishreference.com/word/epigenetic
Updated: 2026-05-20

## Definition

relating to changes in how genes work without changing the actual DNA code. These changes can be influenced by things like diet, stress, or the environment.

For teachers: relating to the regulation of gene expression by mechanisms other than changes in the DNA sequence. Often involves chemical modifications to DNA or histone proteins that affect how genes are read by the cell.

## Examples

- The study shows that epigenetic changes can be passed down through generations.
- Researchers are investigating how epigenetic factors might explain why some people develop certain diseases even if they have no family history of them.
- While the genetic code remains constant, epigenetic modifications allow for dynamic responses to environmental stimuli, effectively silencing or activating specific genes without altering the underlying nucleotide sequence.

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