DNA Timeline

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  • Miescher

    discovered nucleic acids

  • Griffith

    discovery of pneumococcal transformation

  • Avery

    discovered that DNA transmits heredity

  • Chargaff

    discovered that guanine is equal to cytosine and thymine is equal to adenine

  • Franklin and Wilkins

    Discovered X-ray diffraction

  • Hershey and chase

    discovered that DNA is the genetic material not protein

  • Watson and Crick

    Discovered that DNA structure is the double helix

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