Timeline created by peglerb29
  • Period: to


  • Fredrick Griffith

    Fredrick Griffith
    The first major experiment that led to the discoery of DNA. He found that one strand could be transformed, or changed, into other forms. From Textbook
  • P.A. Levene

    P.A. Levene
    Determined the basic structure of nucleotides that make up DNA.From Textbook
  • Oswald Avery

    Oswald Avery
    He identified the molecule that transformed the R strain of bacteria into the S strain. From Textbook
  • Erwin Chargaff

    Erwin Chargaff
    Analyzed the amount of adenine, guanine, thymine,and cytosine in the DNA of various species. From Textbook
  • Hershey and Chase

    Hershey and Chase
    Alfred Hershey and Martha Chase published results of expierements that provided definite evidence that DNA is the transforming factor. From Textbook
  • Rosalind Franklin

    Rosalind Franklin
    Took famous photo 51 that indicted that DNA was a double helix.From Textbook
  • Linus Pauling

    Linus Pauling
    Linus made the electronic molecule structure. He became one of the first scientists in the field of quantum chemistry and a pioneer in the application of quantum theory to the structure of molecules.From Textbook
  • Maurice Wilkins

    Maurice Wilkins
    Helped create double helix model for DNA.From Textbook
  • James Watson

    James Watson
    Built model of double helix DNA. From Textbook
  • Francis Crick

    Francis Crick
    Built a model of the double helix. From Textbook