Deoxyribonucleic Acid (S/F)

Deoxyribonucleic acid (DNA) is a complex organic polymer-forming molecule. It consists of two polynucleotide chains which coil around each other, forming a double helix shape. DNA is often called the “building block of life” because it is the medium through which genetic information is stored, replicated, and utilized by the organisms which have evolved on Earth.