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DNA Project Timeline

  • Gregor Mendel

    Gregor Mendel
    Published the results of his study on pea plants and the fundamental laws of inheritance.
  • Friedrich Miescher

    Friedrich Miescher
    The first to discover that DNA is a molecule.
  • Frederick Griffith

    Frederick Griffith
    The first to experiment that bacteria is able to transfer genetic information through transformation.
  • George Beadle

    George Beadle
    Discovered the role of genes that take place during biochemical events in a cell.
  • Oswald Avery Jr.

    Oswald Avery Jr.
    Indicated that DNA was the carrier of genes in cells, his experiments made way for Watson and Crick's discovery.
  • Edwin Chargaff

    Edwin Chargaff
    Found that the amounts of adenine and thymine as cytosine and guanine in DNA.
  • Martha Chase

    Martha Chase
    Performed an experiment that proved that DNA was not a protein and that it in fact was genetic material in which traits were inherited.
  • Alfred Hershey

    Alfred Hershey
    Performed an experiment that proved that DNA was not a protein and that it was genetic material in which traits were inherited.
  • Rosalind Franklin

    Rosalind Franklin
    Took images of DNA and essentially because of these images, is the one who discovered the structure of DNA known as the "double helix" but she never got credited.
  • Maurice Wilkins

    Maurice Wilkins
    Worked along with Rosalind Franklin who took images of DNA and its structure, but unlike Rosalind Franklin she was credited along with Crick and Watson.
  • Francis Crick

    Francis Crick
    Discovered the structure of the DNA is a double helix after taking over the images from Rosalind Franklin and later received the Nobel Prize along with Watson for this discovery.
  • James Watson

    James Watson
    Discovered the structure of the DNA is a double helix after taking over the images from Rosalind Franklin and later received the Nobel Prize along with Crick for this discovery.
  • Sydney Brenner

    Sydney Brenner
    Proved, by using statistics and amino acid protein sequences, that three nucleotides code for one amino acid.
  • Matthew Meselson

    Matthew Meselson
    Used E. Coli DNA to discover that DNA replication is semi- conservative.
  • Franklin Stahl

    Franklin Stahl
    Used E. Coli DNA to discover that DNA replication is semi- conservative.
  • Edward Tatum

     Edward Tatum
    Discovered the role of genes during biochemical events in a cell.
  • Paul Zamecnik

    Paul Zamecnik
    Alongside with Mahlon Hoagland, Paul Zamecnik discovered tRNA. Then Paul Zamecnik and Mahlon Hoagland discovered that ATP had to be activated to become a peptide chain.
  • Mahlon Hoagland

    Mahlon Hoagland
    Alongside with Paul Zamecnik, Mahlon Hoagland discovered tRNA. Then Mahlon Hoagland and Paul Zamecnik discovered that ATP had to be activated to become a peptide chain.
  • Marshall Nirenberg

    Marshall Nirenberg
    Discovered the first sequence of three bases which is a codon.
  • David Baltimore

    David Baltimore
    Discovered reverse transcriptase which is an enzyme used to create DNA from an RNA template.
  • Howard Temin

    Howard Temin
    Discovered reverse transcriptase which is an enzyme used to create DNA from an RNA template.