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, organized structure, allowing it to fit within the cell nucleus. Chromatin exists in two forms: euchromatin, which is loosely packed and accessible for gene expression, and heterochromatin, which is tightly packed and generally inactive. The structure of chromatin is essential for regulating gene activity and maintaining genomic stability. During cell division, chromatin condenses to form chromosomes, ensuring accurate distribution of genetic material to daughter cells. This dynamic structure allows cells to respond to various signals and environmental changes.