The History of DNA Timeline Rubric

  • Gregor Mendel

    Gregor Mendel
    Mendel discovered the basic principles of heredity through experiments in his garden. His experiments showed that the inheritance of certain traits in pea plants.
  • Friedrich Miescher

    Friedrich Miescher
    Friedrich Miescher's discovery of the genetic code was huge,he extracted and observed DNA from white blood cells. Friedrich Miescher was a Swiss physician and biologist who is known to be the first person to isolate nucleic acid.
  • Frederick Griffith

    Frederick Griffith
    Frederick Griffith was a British bacteriologist. Griffiths experiment showed us that bacteria can change form and function through transformation.
  • Oswald Avery

    Oswald Avery
    Oswald Avery was one of the first molecular biologist. Avery is best known for his experiment that isolated DNA. This was a huge discovery and help them figure out that DNA was carrying hereditary information.
  • Rosalind Franklin

    Rosalind Franklin
    Rosalind Franklin discovered the density of DNA and also established that the molecule existed in a helical conformation. Her work showed that DNA molecules are in an X-ray patterns.Her work paved the road for Watson & Crick to come up with DNA is a double-helix.
  • Hershey & Chase

    Hershey & Chase
    Hershey and Chase concluded that DNA was not a protein that it was a genetic material. They determined that a protective protein film was formed around it.
  • Watson & Crick

    Watson & Crick
    Watson and Crick determined the double-helix structure of DNA the molecule containing human genes.DNA–short for deoxyribonucleic acid–was discovered in 1869.
  • Collins & Venter

    Collins & Venter
    Venter made a new strategy for the discovery and tagging of genes that revolutionized biological science. ... Efforts to bring Collins and Venter together to complete the mapping of the human genome began in late 1999.