Roy Elwood Clausen
botanist (1891-1956)

Roy Elwood Clausen (August 21, 1891, Randall, Iowa – August 21, 1956, Berkeley, California) was an American biochemist, botanist, plant geneticist, and drosophilist.
Biography
Clausen was the eldest of six siblings. As a boy with his family, he moved from Iowa to Newkirk, Oklahoma, in 1900. In 1910, he graduated with a bachelor of science degree in agriculture from Stillwater's Oklahoma A&M (later renamed Oklahoma State University). In 1910, Clausen matriculated at the University of California, Berkeley. There, Clausen graduated in 1912 with a second bachelor's degree, in agriculture, with a major in plant pathology. He graduated in 1914 with a Ph.D. in biochemistry, with a minor in plant pathology. His thesis advisor was Thorburn Brailsford Robertson. From 1914 until his death in 1956, Clausen was a faculty member at UC Berkeley. During World War I, he was on an eighteen-month leave of absence when he served in the U.S. Army as a supply officer in a depot brigade.
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This entry incorporates text from “Roy Elwood Clausen” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.