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DNA Timeline

By anniedicus

  • Meischer

    Meischer
    Friedrich Meischer discovered nucleic acid in 1870. He discovered this when he found a substance with unexpected properties that didn't match the ones of proteins. This led to the discovery which he called "nuclein" which is now known as deoxyribose nucleic acid.

  • Griffith

    Griffith
    Fredrick Griffith discovered the transformation of bacteria through an experiment on mice. This overall proved his project that DNA is a molecule of inheritance.

  • Additional Discovery

    Additional Discovery
    In 1933 Thomas Morgan proved that gene and genetic material is carried in chromosomes through his experiment done on fruit flies.

  • Avery

    Avery
    Oswald Theodore Avery discovered that the nucleic acid in DNA both stores and transmits material and info to each generation of organisms. He also found that DNA is where genes and genetic information is found.

  • Chargaff

    Chargaff
    Erwin Chargaff discovered what he called Chargaff's Rules which showed that the number of adenine is equal to the number of thymine, while the number of cytosine is equal to the number of quanine in DNA

  • Franklin

    Franklin
    Rosalind Franklin made a famous discovery through x-Ray diffraction. The image taken showed and proved the structure of DNA, which is a double helix. Wilkin's discovery was similar to Franklins in discovering the double helix

  • Hershey & Chase

    Hershey & Chase
    The Hershey & Chase experiment proved that DNA is made of genetic material. This corrected the previous assumptions that proteins carried genetic information since DNA and protein are similar, and it was DNA that was the heriditary material.

  • Watson & Crick

    Watson & Crick
    Watson & Crick received most of the credit for the discovery of DNA even though it was discovered in the 1860's. But they did put the finishing pieces together from the work of Rosalind Franklin and discovered the DNA stucture of the double helix.

  • Additional Discovery

    Additional Discovery
    Theodor Heinrich Boveri studied the mechanisms of heredity and the theory of inheritance. His experiments also helped distinguish the roles of cytoplasm and the nucleus in a process called embryogenesis, which is where adjacent cells communicate with eachother.