Genetic Engineering

By 2025810

  • Charles Darwin

    Charles Darwin discovers natural selection

  • Gregor Mendel

    Gegor Mendel creates the punnet square and adds to the knowledge of modern genetics.

  • Chromosomes Carry Genes

    Thomas Hunt Morgan and his students study fruit fly chromosomes. They find that chromosomes carry genes.

  • DNA transforms Cells

    Oswald Avery, Colin MacLeod, and Maclyn McCarty show that DNA transforms the properties of cells, not proteins. This clarified the chemical nature of genes.

  • Genes are made of DNA

    Test show that only the DNA of a virus needs to enter a bacterium to infect it, implying that genes are made of DNA.

  • DNA double helix

    Francis Crick and James Watson create a model of DNA. Showing that it is a double helix structure.

  • 46 Human Chromosomes

    Joe Hin Tijo defines 46 as the exact number of chromosomes in human cells.

  • First Transgenic Mice and Fruit Flies

    Scientists create the first genetically modified living mice and fruit flies.

  • Positional Cloning

    Scientists find a method to posistionally clone a disease gene.

  • Completion of the Human Genome Sequencing

    The finished human genome sequence will be at least 99.99% accurate