DNA Timeline

  • Frederick Griffith discovered bacterial transformation.

    Frederick Griffith discovered bacterial transformation.
  • Oswald Avery discovered that the chemical that transformed bacteria was DNA.

    Oswald Avery discovered that the chemical that transformed bacteria was DNA.
  • Alfred Hershey and Martha Chase confirmed DNA was the genetic material of a phage.

    Alfred Hershey and Martha Chase confirmed DNA was the genetic material of a phage.
  • Rosalind Franklin and Maurice Wilkins used an X-ray diffraction image to view structure of DNA.

    Rosalind Franklin and Maurice Wilkins used an X-ray diffraction image to view structure of DNA.
  • James Watson and Francis Crick discovered that DNA was a double-helical structure.

    James Watson and Francis Crick discovered that DNA was a double-helical structure.