imprinting

in genetics
https://doi.org/10.1351/goldbook.10843

Differential expression of a gene, depending on whether it was transmitted through the sperm or the egg.

Note: Imprinting is an epigenetic modulation of gene expression, thought to be regulated by attachment of methyl groups to the DNA, and by chromatin structure.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 768 [Terms] [Paper]