The "Double Helix" is the structure of DNA, which stands for deoxyribonucleic acid. It consists of two long strands that twist around each other, resembling a spiral staircase. Each strand is made up of a sequence of nucleotides, which are the building blocks of DNA. The order of these nucleotides encodes genetic information essential for the development and functioning of living organisms. The discovery of the double helix structure was made by scientists James Watson and Francis Crick in 1953, based on the X-ray diffraction images produced by Rosalind Franklin. This groundbreaking finding has had a profound impact on the fields of genetics, biology, and medicine, enhancing our understanding of heredity and genetic disorders.