A molecular model of DNA (deoxyribonucleic acid), represented as a double helix ribbon model with colorized base pairs. DNA encodes the genetic information of living organisms using sequences of four nucleobases known as adenine (A), thymine (T), guanine (G), and cytosine (C). These nucleobases follow the base pairing rules (A with T/G with C) to code for specific amino acids for synthesized proteins.