Genetics Advancements By 1234567879 1857 Darwin published his book on Natural Selection 1869 DNA is first discovered 1879 Flemming Discovers Mitosis 1911 Morgan Discovers Chromosomes carry DNA 1921 Frederick Banting discovers Insulin 1953 Discovery of the Double Helix 1955 Discovered that humans have 46 chromosomes, (J.H Tjio) 1973 First Animal Gene Cloned 1978 Insulin Created