genome accessibility

Genome accessibility refers to how easily certain regions of DNA are exposed and available for the cell’s machinery, such as proteins that read and copy genetic information. Think of the genome as a vast library; some books (genes) are open on the table for reading, while others are closed away in locked drawers. Accessibility is influenced by how tightly DNA is packed and organized, which determines when and where genes are active. Open or accessible regions allow genes to be turned on or modified, playing a crucial role in controlling biological processes and responses.