How is it used ?
It is used by how it stores your genetic information that makes you the person you are by your genetic build up. This is also how traits are passed on from generation to generation.
Where does it come from?
Nucleic acid can be found in the nuclei of living cells, and there are a lot of DNA structures in your body that are very important to you as a person.
Who discovered it?
The person who discovered it a man named Friedrich Miescher who discovered the macromolecule in the year 1869.