History of the Discovery of the DNA Structure By Kaka791999 Feb 25, 1866 Gregor Mendel discovered inheritance Feb 25, 1950 Rosaline Franklin Discovered DNA Feb 25, 1955 Watson and Crick make a DNA model Feb 25, 1957 Arthur Kornberg produce DNA in test tubes Feb 25, 1963 F. Sanger developed sequencing procedure for DNA Feb 25, 1966 The Genetic code was discovered Feb 25, 1987 An international team of scientists began the project to map the human genome. Feb 25, 1994 The FDA approved the first genetically engineered food Feb 25, 1997 Dolly the Sheep - the first adult animal clone. Feb 25, 2000 J. Craig Ventor, along with Francis Collins, jointly announce the sequencing of the entire human genome.