DNA refers to: Select one: a. deoxyribonucleic acid b. duonucleic acid c. dynonucleic antigen d. di-nucleic antibody

The correct answer is a. deoxyribonucleic acid.<br /><br />DNA stands for deoxyribonucleic acid. It is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses. DNA is composed of two strands that coil around each other to form a double helix structure. Each strand is made up of a series of nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. The sequence of these nucleotides determines the genetic information encoded in DNA.