The Discovery of DNA

By john.kagy@nisd.net
  • Period: to

    Journey to the Double Helix

  • Gregor Mendel

    Known as the "Father of Genetics" First to suggest that characteristics were passed from generation to generation

  • Friedrich Miescher

    Discovered substance he called Nuclein by isolating it from a cell's nucleus, it would later be renamed DNA

  • Frederick Griffith

    Demonstrated that bacteria could transfer genetic information through process called transformation.

  • Oswald Avery, Colin MacLeod, and Maclyn McCarty

    Demonstrated by experiment that bacterial transformation was carried out by DNA

  • Erwin Chargaff

    Discovered that the bases in DNA, Adenine and Thymine, Guanine and Cytosine exist in a 1 to 1 to each other - Chargaff's Rule

  • Rosalind Franklin

    took x-ray crystallography images of DNA which showed the helical form of DNA

  • Hershey and Chase

    Proved through experiments with viruses that DNA is the genetic material.

  • Watson and Crick

    Published the accepted model of DNA's double helix structure