The type of biological molecule that stores genetic information is nucleic acid, primarily found in the form of DNA (deoxyribonucleic acid). DNA carries the genetic instructions necessary for the growth, development, functioning, and reproduction of all living organisms. Its structure, characterized by a double helix formation, facilitates the storage and transmission of genetic information through sequences of nucleotides. RNA (ribonucleic acid) also plays a role in expressing this genetic information and is involved in protein synthesis.