Cromatin

Chromatin is the complex of DNA and proteins found in the cell nucleus that packages and organizes genetic material. Its primary protein components are histones, around which DNA winds tightly, forming a structure that fits within the nucleus. This packaging regulates gene accessibility, influencing which genes are active or inactive. During cell division, chromatin condenses further to form chromosomes. Overall, chromatin's structure balances protecting DNA and allowing controlled gene expression essential for cell function and development.