Deoxyribonucleic acid (also known as deoxyribonucleic acid). As an organic substance, it is the main chemical component of chromosomes. It is also the material that makes up biological genes. Deoxyribonucleic acid (DNA) is a common clinical biological term for an organic substance that is found in the nucleus of an organism’s cells and is a major component of chromosomes. Deoxyribonucleic acid (DNA) is a derivative of pentose sugar found in all cells. Deoxyribonucleic acid molecules are linked by phosphodiester bonds to form chains that form the backbone of polynucleotide fibers, and so are also the materials that make up biological genes. Deoxyribonucleic acid can also be called genetic particles. During the reproduction of an organism, the parent copies a part of its own genetic material into the offspring, thus accomplishing the transmission of traits. So deoxyribonucleic acid is vital in living organisms.