Helix

History of Genetics

By djlew23

  • Gregor Mendel

    Gregor Mendel
    Gregor Mendel performs his experiments on pea plants.

  • Friedrich Miescher

    Friedrich Miescher
    In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule.

  • Fredrick Griffith

    Fredrick Griffith
    Griffith's Experiment
    Suggesting that bacteria are capable of transferring genetic information through a process known as transformation.

  • Oswald Avery

    Oswald Avery
    The "transforming principle" was identified as being genetic

  • Rosalind Franklin

    Rosalind Franklin
    X-ray diffraction images of DNA while at King's College, London, which led to the discovery of the DNA double helix for which James Watson, Francis Crick and Maurice Wilkins shared the Nobel Prize in Physiology or Medicine in 1962.

  • Hershey and Chase

    Hershey and Chase
    Hershey Vhasse ExperimentHershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not.

  • Watson and Crick

    Watson and Crick
    Watson and Crick published the structure of DNA.