Bio By Steeda99 Mar 15, 1950 Crick and Watson descovered the chemical structure of DNA Crick and Watson discovered the chemical structure of DNA Oct 29, 1950 Watson and Crick made a model of the DNA molecule and proved that genes determine heredity. Feb 7, 1957 Kornberg of the U.S. produced DNA in a test tube. Mar 10, 1963 Sanger (1918- ) of Britain developed sequencing procedure for DNA. Jul 25, 1966 Genetic code discovered Sep 30, 1987 Human Genome project begins Apr 19, 1995 O.J. Simpson case Feb 20, 1997 First adult animal, a sheep