• Pea Plants

    Gregor Mendel Experiments with pea plants
  • Rediscovery

    Mendel's work is rediscovored
  • Theroy of Heredity discovored

    Sutton discovovers the theroy of heredity
  • 1st steps

    Griffith researches if genes are DNA or protien
  • DNA solved

    Scientist Avery descoveries DNA is hereditary
  • Equal bases

    Scientist Chargaff finds that the bases adenine = thymine, and cytosine = guanine
  • Final Option

    DNA is determinmed to be genetic