DNA stands for Deoxyribonucleic Acid. DNA is the building block of life. It is a molecule that actually carries the genetic instructions used in the groeth, development, functioning and reproduction of not only human beings but also every living organosm and some viruses.
DNA teams up with RNA, protenis, lipids, and complex carbohydrates to form the essential components of all known life forms. There are two DNA strands that store all the biological information used it living organisms.