An American geneticist, who was awarded the 1927 American Association for the Advancement of Science Prize and the 1946 Nobel Prize for Medicine for his discovery in 1927 that X-rays increase the rate of gene mutation. His research into mutations and studies of genetic theory contributed greatly to the understanding of heredity and evolution. He taught at the University of Texas, moved to Germany in 1932, and from 1933–7 was senior geneticist at the Institute of Genetics of the Academy of Sciences of the USSR. Following his return to the United States, he held several posts before being appointed professor of zoology at Indiana University in 1945.
Subjects: Ecology and Conservation.