What does DNA stand for?

DNA stands for Deoxyribonucleic acid, which is the molecular carrier of genetic information in living organisms. The structure of DNA consists of two strands that coil around each other to form a double helix. Each strand is made up of a sequence of nucleotides, which are the building blocks of DNA. A nucleotide is composed of three components: a phosphate group, a deoxyribose sugar, and a nitrogenous base. The specific sequence of these nitrogenous bases encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses.

The term "deoxy" refers to the absence of an oxygen atom on the sugar molecule (ribose), distinguishing it from ribonucleic acid (RNA), which contains ribose. The correct nomenclature underscores the chemical structure and properties of DNA, including its function in heredity and inheritance across generations.