explain what is dna
The structure of part of a DNA double helix. Deoxyribonucleic acid (/diËÉksiËraÉªboÊnjÊËkliËÉªk, -ËkleÉªÉªk/; DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.