DNA is the hereditary material that contains the genetic instructions for proper growth, development and functioning and reproduction of all known living organisms
DNA was first identified by a Swiss chemist named Johann Friedrich Miescher in the late 1869.
He was able to identify DNA as a distinct molecule after isolating it from human white blood cells.
At that time, he named it as " nuclein", which was later changed to “ nucleic acids” and eventually to “ deoxyribonucleic acid”.