historical biotechnolgy By ashton.cauthen658@gaston.k12.nc.us Jan 24, 1600 development of biotechnology Jan 24, 1665 microscope ivented Jan 24, 1675 bacteria Jan 24, 1700 devolped new varieties of plants Period: Jan 24, 1700 to Jan 24, 2014 historical biotechnolgy Jan 24, 1800 Gregor Mendal developed theory of heredity Jan 24, 1900 Mendal's law fully unsterstood Jan 24, 1920 Alexander Fleming studied bacteria Jan 24, 1950 Protective semen to be frozen Jan 24, 1950 complete new organisms from a single cell Jan 24, 1953 waston and crick puplished DNA Jan 24, 1970 embryo transfer Jan 24, 1972 recombinant dna