What molecule carries the genetic instructions for living organisms?

DNA (deoxyribonucleic acid) carries the genetic instructions that determine an organism's traits and guide the building of proteins. It is found in the nucleus of cells and is organized into structures called chromosomes. DNA's famous double-helix shape stores information in sequences of four bases. Proteins are built according to DNA's instructions but do not store the genetic code themselves; glucose is an energy sugar; and water is essential to life but carries no genetic code. DNA as the molecule of heredity is fundamental biology content.