Genetics Timeline

Main

Charles Darwin Orgin of Species

1850

Publishes The Origin of Species. Darwin's book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection.

Gregor Mendel discovers genetic info passed down through generations

1854

Gregor Mendel was an Austrian monk and botanists. He experimented on pea plants and noticed that the plants offsprings height, exhibited dominant and recessive traits.

Nettie Stevens and Edmund Wilson describe beahvior of sex chromosomes

1905

Independently described the behavior of sex chromosomes-XX determines female; XY determines male.

Genes Control Biochemical Events

1930

George Beadle and Edward Tatum discover through experiments on neurospora, a bread mold, that genes are responsible for the production of enzymes. Their report is the genesis of the "one gene-one enzyme" concept.

Rosalind Franklin X-rays of DNA

1951

Obtained sharp X-ray diffraction photographs of DNA.

Genetic Duplication

1970

Susumu Ohnov was one of the most famous developers of this theory in his classic book Evolution by gene duplication. The duplication of a gene results in an additional copy that is free from selective pressure.

New created organsim allowed to digest crude oil for oil spills

1980

In 1980, the U.S. Supreme Court, in Diamond v. Chakrabarty, upheld the first patent on a newly created living organism, a bacterium for digesting crude oil in oil spills.

First animal cloning

July 6, 1996

Animal cloning- first mammal to be cloned (sheep). A bull was then later cloned in May.

Human Genetic Engineering

2004

An example of this genetic engineering is taking infertile women and correct defects in their mitochondria to have children.

Genetic tests on animals by FDA

August 2010

FDA test to change genes and traits. It was to make animals stronger, faster, and sharper than normal predecessors.