Chromatin: meaning, definitions and examples

cell biology

Chromatin is a complex of DNA and proteins found in the nucleus of eukaryotic cells. It plays a crucial role in packaging DNA into a compact, dense shape, allowing for efficient cellular processes such as transcription, replication, and repair. Chromatin exists in two forms: euchromatin, which is less condensed and active in gene expression, and heterochromatin, which is more tightly packed and generally inactive. The structural organization of chromatin is essential for regulating gene accessibility and expression.

chromosomal DNA, nuclear material

Examples of usage

• During cell division, chromatin condenses into visible chromosomes.

• Chromatin remodeling is important for DNA repair mechanisms.

• Scientists study chromatin structure to understand gene regulation.