George Beadle

George Wells Beadle (October 22, 1903 – June 9, 1989) was an American geneticist. In 1958 he shared one-half of the Nobel Prize in Physiology or Medicine with Edward Tatum for their discovery of the role of genes in regulating biochemical events within cells. He also served as the 7th President of the University of Chicago.

George Beadle

Born
George Wells Beadle

(1903-10-22)October 22, 1903
Wahoo, Nebraska, U.S.
DiedJune 9, 1989(1989-06-09) (aged 85)
Pomona, California, U.S.
Alma materUniversity of Nebraska (BS)
Cornell University (MS, PhD)
Known for
  • One gene-one enzyme hypothesis
  • Gene regulation of biochemical events within cells
Awards
Scientific career
FieldsGenetics
Institutions
ThesisGenetical and Cytological Studies of Mendelian Asynapsis in Zea mays (1930)
Doctoral advisor
  • Rollins A. Emerson
  • Lester W. Sharp
Other academic advisors
Doctoral students
  • Robert Metzenberg
Other notable students

Beadle and Tatum's key experiments involved exposing the bread mold Neurospora crassa to x-rays, causing mutations. In a series of experiments, they showed that these mutations caused changes in specific enzymes involved in metabolic pathways. These experiments led them to propose a direct link between genes and enzymatic reactions, known as the One gene-one enzyme hypothesis.

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