DNA Contributors

By 00810574

  • Frederick Griffith

    Frederick Griffith
    Discovered that DNA is the molecule of inheritance.

  • Oswald Avery / Mclyn McCarty / Colin MacLeod

    Continued research of Frederick Griffith's discovery.

  • Oswald Avery

    Oswald Avery
    Discovered that DNA is the carrier of genes in cells.

  • Rosalind Franklin

    Her work directly led to the discovery by Francis Crick and James Watson that DNA is a double helix in structure.

  • Alfred Hershey / Martha Chase

    Alfred Hershey / Martha Chase
    Paved the way for the discovery of the helical nature of DNA.

  • Erwin Chargoff

    Discovered the pairings of guanine and cytosine, and adenine and thymine in the makeup of DNA.

  • Francis Crick and James Watson

    Discovered the structure of DNA.

  • Meselson and Stahl

    Meselson and Stahl
    Proved that DNA replication was semi-conservative, meaning that both strands of DNA were used to synthesize a new DNA molecule, or one DNA molecule per strand. This is called semiconservative replication. They found this out by observing e coli with different concentrations of nitrogen (15N and 14N) in their DNA. When these e coli replicated, the resulting DNA strands consisted of equal parts 15N and 14N, which supported the semiconservative replication hypothesis.