1. The study of chemical modifications to DNA and histone proteins that affect gene expression without changing the underlying DNA sequence.
Usage: scientific; biology; typically used as a mass noun (uncountable)

Examples

• Epigenomics has revealed how environmental factors can influence which genes are turned on or off.
• Researchers use epigenomics to understand how identical twins can develop different traits over time.
• The field of epigenomics is crucial for cancer research, as many cancers involve epigenetic changes.
• Epigenomics techniques allow scientists to map chemical tags across the entire genome.
• Advances in epigenomics have shown that some diseases can be influenced by diet and stress.
• The company invested in epigenomics technology to develop new diagnostic tools.