DNA molecules are found in the nuclei of cells. They carry genetic information.
A DNA molecule consists of a backbone polymer of sugar molecules and phosphate groups. Attached to this are the four bases adenine, guanine, cytosine and thymine. The sequence of these bases comprises the genetic code.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.