deoxyribonucleic acid, which occurs in the nuclei of cells, is the material that makes up genes, and consists of long chains typically paired in a double helix
any of various nucleic acids that occur chiefly in the nuclei of cells, are the material that makes up genes, and consist of long strands of phosphate groups alternating with deoxyribose groups, from each of which projects a purine or pyrimidine base. The DNA chains typically occur as pairs in a double helix
DNA constitutes the genetic material within each cell, containing the code on which proteins are synthesized and the information that is transferred between cell generations during reproduction and development. Each strand of the double helix consists of a sequence of nucleotides, adenine, cytosine, guanine, and thymine (ACGT). The order in which they are arranged is the basis for the genetic code — Professor Steven Rose
[contraction of deoxyribonucleic acid]