Dna helix

Genetics

  • Mendel Discovers Genetic Traits

    Mendel Discovers Genetic Traits
    Gregor Mendel was discovering genetic traits at the same time Darwin was theorizing evolution. Darwin had his own theory about inheritence, which Mendel disproved. Though his work was little known when first published, he has become more famous recently.
  • Flemming Discovers Chromosones

    Flemming Discovers Chromosones
    Flemming used aneline dyes to see what was in the nucleus. what he found was Chromosones. He coined the turn chromatin, which means "can be colored."
  • Thomas Morgan Discovers Genes

    Thomas Morgan Discovers Genes
    Thomas Morgan Did lots of work in genetics. He was the one that disscovered that chromosones contained the genes that determine the physical traits of a human.
  • Chargaff Develops Rules of DNA

    Chargaff Develops Rules of DNA
    Chargaff proves that in DNA there are equal amounts of Thymine and Adenine and equal amounts of Cytosine and Guanine.
  • Watson And Crick Discover the Structure of DNA

    Watson And Crick Discover the Structure of DNA
    Watson and Crick worked together to discover the double helix, the structure of DNA. They did no expiriments of their own, but based their theory on the results of expiriments held by others.
  • The First Restriction Enzyme is Purified

    The First Restriction Enzyme is Purified
    Hamilton Smith purified the first restriction enzyme in 1970. He later discovered a type II restriction enzyme with the help of another scientist.
  • Kary Mullis Develops PCR

    Kary Mullis Develops PCR
    The Polymerase Chain Reaction is technology to make many copies of DNA
  • First Successful Cloning

    First Successful Cloning
    "Dolly" the sheep is the first successful cloning of a mammal. She had 3 mothers, one of which provided an egg cell, one DNA, and the other gave birth to "Dolly." She was originally code named 6LLS, and her cloning has raised both new ideas and controversy.
  • The Human Genome Project Successfully Maps The Human Genome

    The Human Genome Project Successfully Maps The Human Genome
    The human genome project was an international project that was made to map the human genome. In its completion in 2003, they had mapped all but about 8% of the human genome. They made a series of books to contain the map.