Euchromatin

Euchromatin is a form of DNA in the nucleus of a cell that is loosely packed and actively involved in gene expression. Because it's less tightly wound, the cell’s machinery can easily access the genetic information stored there to make proteins. This contrasts with heterochromatin, which is more tightly packed and generally less active. Euchromatin plays a crucial role in gene regulation, allowing cells to turn genes on or off as needed for growth, development, and response to their environment. Its dynamic structure helps ensure genes are expressed at the right times and in the right amounts.