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History of DNA

By coppk

  • Griffith

    Griffith
    Experiment: Griffith worked with two strains on multiple differnt mice. The R-Strain and the S-Strain. He injected the R-Strain into the mouse and the mouse lived. He injected another mouse with the S-Strain and the mouse died. When griffith injected another mouse with the with the heated up bactiria that wsa so hot that it killed the S-Strain and the mouse lived. When it killed the S and R Strain the mouse died.
    Conclusion: Something caused the R-strain to turn into the S-Strain.

  • Avery, MacLeod, McCarty

    Avery, MacLeod, McCarty
    Experement: Injected S-Strain and R-Strain and Enzyme that destroys protien. Protien wasn't present. The Genetic info was still passed on so it can't be protien. Then they injected the S-Strain and R-Strain and Enzyme that killed the DNA
    Concluion: DNA holds the genetic information.

  • Chargaff

    Chargaff
    Discovered the amount of the Aderiusine(A) and the amount of the Thymine(T) wehre equal. Also that the amount of Cytosine(C) and Guanine(G) were the same.
    Conclusion: A-T and C-G

  • Hershey and Chase

    Hershey and Chase
    Bactiria phage ingects somthing into the bactiria this tricks the bactiria to make more bactirophage.
    T2 bacteiophage
    Tagged the protein coat with the rediocative isotope.
    Conclusion: Because the DNA was injected in it showed DNA was the genetic marerial.

  • Franklin and Wilkins

    Franklin and Wilkins
    Perpose: To take pictures of molecules using x-ray diffactions
    Conclusion: Franklin took a picture of DNA that later Waston and Crink used to modal DNA

  • Watson and Crick

    Watson and Crick
    Discovored the structure of the DNA using Franklins information and pictures. They discovered that the DNA was a double helix