nucleolar organizer regions

Nucleolar organizer regions (NORs) are specific parts of our chromosomes that contain genes responsible for producing ribosomal RNA, a key component of ribosomes which are essential for protein synthesis. These regions are located within certain chromosomes and are associated with the formation of the nucleolus, a small structure inside the cell nucleus. NORs are essential for cell growth and function because they help produce the machinery needed for building proteins. In scientific studies, NORs can be visualized and analyzed to provide information about genetic stability and have roles in diagnosing certain diseases like cancer.