DNA Timeline

  • Thomas Hunt Morgan

    Morgan was able to demonstrate that genes are carried on chromosomes and are the mechanical basis of heredity.
  • First conviction stemming from DNA fingerprinting

    On September 13 1902 Harry Jackson was found guilty for breaking in to a house in Denmark Hill, and sentenced to seven years in prison
  • Frederick Griffith

    Frederick Griffith discovered what he called a transforming principle, which is today known to be
  • Oswald Avery

    Oswald Avery discovered that DNA is the material of which genes and chromosomes are made.
  • Maurice Wilkins and Rosalind Franklin

    The discovered the first clearly crystalline X-ray diffraction patterns from DNA fibres
  • Alfred Hershey and Martha Chase

    Alfred Hershey and Martha Chase confirmed that DNA was the genetic material.
  • Erwin Chargaff

    Chargaff showed that in DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units.
  • James Watson and Francis Crick

    They discovered that DNA was a double helix.
  • Linus Pauling

    Pauling developed the theory of the molecular clock, which enables one to judge the separation in time between two species by looking at the number of differences in their hemoglobin proteins.
  • Fred Sanger

    Sanger discovered the formylmethionine tRNA which initiates protein synthesis.
  • Gene Therapy first used

    Gene therapy is the insertion of genes into an individual's cells and tissues to treat a disease.
  • Human Genome Project

    Was an international scientific research project with a primary goal to determine the sequence of chemical base pairs which make up DNA and to identify and map the approximately 20,000–25,000 genes of the human genome from both a physical and functional standpoint
  • Flavr Savr Tomatoes

    The Flavr Savr tomato was the first commercially grown genetically engineered food to be granted a license for human consumption.
  • Francis Collins

    Collins founded NHGRI's Division of Intramural Research, a collection of investigator-directed laboratories that conduct genome research that has developed into one of the nation's premier research centers in human genetics
  • Dolly the Sheep

    A female domestic sheep remarkable in being the first mammal to be cloned from an adult somatic cell, using the process of nuclear transfer.
  • J. Craig Venter

    Venter helped to launch the Human Genome Project.