Watson and Crick first discovered the structure of the DNA molecule. The structure was described as having a double helical structure. The structure is composed of molecules or bases called nucleotides. The structure was found to have 4 basic nucleotides or base pairs. They are namely adenine, guanine, cytosine and thymine.
The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology
