Chromosome Imprinting

Definition

The mechanisms involved in chromosomal imprinting, or labeling of DNA, is associated with methylation of DNA in many organisms. Imprinting is a reversible, differential marking of genes or chromosomes that is determined by the sex of the parent from whom the genetic material is inherited.

Etymology

From Greek 'chrōmos' meaning 'color' and 'imprint', referring to the specific marking of DNA.

Example

Chromosome imprinting plays a crucial role in regulating gene expression, ensuring that certain genes are expressed only from the maternal or paternal chromosome.

Related Terms

• DNA methylation
• Parental inheritance