-
Period: to
Gregor Mendel
Gregor did a genetic experiment with a pea plant that took him eight years and his results were not published until 1865. He worked in Austria. Gregor's experiment was to find out inheritance in plants. He bred garden peas which led him to form the basic laws of heredity. -
Period: to
Hershey and Chase
Their experiment showed that when bacteriophages infect bacteria, its DNA enters the host bacteria cell but the protein does not. They proved that DNA is the carrier of genetic material not protein. They worked in St.Louis. -
Thomas Morgan
He worked in Kentucky. He did an experimental research with the fruit fly which he came across the discovery of the chromosomes theroy of heredity. -
Erwin Chargaff
He worked in Austria-Hungary. Erwin discovered that DNA is composed of two bases and how they have to types of which were adenine, thymine, guanine, and cytosine. -
James Watson and Francis Crick
They worked in Cambridge University. They published the first acurate model and structure of the DNA model. -
Seymour Benzer
He proved that mutations were caused by changes in the DNA order. He used a bacteria mutant called the phage to do his research on. -
Meselson and Stahl
They showed that a new DNA is made from copying an old one. Whenever DNA is replicating from another DNA molecule it had to have an old strand which was called semiconservative, from the parent molecule as a template in order to replicate it. Meselson and Stahl used bacteria to discover this process. They worked in California. -
Roy Britten
Discovered the repetetive elements in DNA. Repetetive elements do not code for proteins, enzymes, or cellular parts. He used a Human Genome Project to find his information. He worked in many colleges. Some of them were Princeton University, Johns Hopkins University, etc. -
Richard Roberts and Phillip Sharp
They worked in New York. They made tool and techniques that led the discovery of iterrupted genes. -
Barbara McClintock
She discovered that genes are able to vary in positons on chromosomes. Barbara worked in Connecticut and New York. She used virurses and bacteria to get her results of the change in gene postions.