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Period: to
Journey to the Double Helix
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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