time line DNA - Arlet Florensa

By 123AARLET
  • Friedrich Miescher

    Friedrich Miescher

    He described a completely new nuclear molecule that, unlike proteins, contained large amounts of phosphorus.
  • Phoebus Levene

    Phoebus Levene

    He identified that DNA is a nucleotide formed by a nitrogenous base, a sugar and a phosphate.
  • Levene's Tetranucleotide

    Levene's Tetranucleotide

    He proposed that DNA was composed of repeating sequences of four nucleotides.
  • Frederick Griffith

    Frederick Griffith

    He discovered bacterial transformation.
    Frederick Griffith’s experiment aimed to understand how some Streptococcus pneumoniae bacteria caused the disease (pneumonia) and others did not.
  • MacLeod and McCarty

    MacLeod and McCarty

    They conducted a series of experiments to confirm whether DNA is the basis of genetic material.
  • Alfred Hershey and Martha Chase

    Alfred Hershey and Martha Chase

    They conducted a series of experiments to confirm whether DNA is the basis of genetic material.
  • Erwin Chargaff

    Erwin Chargaff

    You will discover two rules that will help you discover the double helix of DNA.
  • Linus Pauling

    Linus Pauling

    The DNA triple helix was a proposal made before the correct double helix model by Watson and Crick in 1953.
  • Rosalind Franklin

    Rosalind Franklin

    I take photographs of the structure of DNA to discover the organization of its strands, revealing its helical shape. "Photo 51"
  • James Watson, Francis crick, Maurice Wilkins

    James Watson, Francis crick, Maurice Wilkins

    Description of the DNA molecule in the form of a double helix.
  • The Nobel Prize in Physiology or Medicine

    The Nobel Prize in Physiology or Medicine

    Francis Crick, James Watson and Maurice Walkins won The Nobel Prize in Physiology or Medicine.