DNA (Deoxyribonucleic Acid)

Definition

DNA is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses.

Related terms

Genes:

These are specific sequences of bases in DNA that provide instructions on how to build and maintain an organism's cells.

Chromosomes:

These are long strands of DNA wound around proteins. They carry genes and function in the transmission of hereditary information.

Nucleotides:

These are the building blocks of DNA. Each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases (adenine, guanine, cytosine or thymine).