What is DNA? Types of DNA structure and functions - DNA testing

What is DNA? Types of DNA structure and functions - DNA testing . Deoxyribonucleic acid is a molecule composed of two chains that coil around each other to form a double helix carrying the genetic instructions used in the growth, development, functioning, and reproduction of all known organisms and many viruses. https://en.wikipedia.org/wiki/DNA Cretits: Fuse School http://www.youtube.com/fuseschool #DNA #DNAtesting #DNAstructure