Sturtevant , Alfred Henry
(1891–1970) American geneticist
Born in Jacksonville, Illinois, Sturtevant graduated at Columbia University in 1912 and continued there, working for his PhD under the supervision of T. H. Morgan. His thesis dealt with certain aspects of fruit fly (Drosophila) genetics, the research being conducted in the famous ‘fly room’ at Columbia.
During this period Sturtevant developed a method for finding the linear arrangement of genes along the chromosome. This technique, termed ‘chromosome mapping’, relies on the analysis of groups of linked genes. His paper, published in 1913, describes the location of six sex-linked genes as deduced by the way in which they associate with each other: it is one of the classic papers in genetics.
Sturtevant later discovered the so-called ‘position effect’, in which the expression of a gene depends on its position in relation to other genes. He also demonstrated that crossing over between chromosomes is prevented in regions where a part of the chromosome material is inserted the wrong way round. This had important implications for genetic analysis. Although employed by the Carnegie Institution in 1915, Sturtevant continued working at Columbia until 1928. He then moved to the California Institute of Technology, where he was professor of genetics and biology until his death. He wrote many important papers and books and was one of the authors of The Mechanism of Mendelian Heredity(1915).

Scientists. . 2011.

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  • Sturtevant, Alfred Henry — ▪ American geneticist born Nov. 21, 1891, Jacksonville, Ill., U.S. died April 5, 1970, Pasadena, Calif.       American geneticist who in 1913 developed a technique for mapping the location of specific genes of the chromosomes in the fruit fly… …   Universalium

  • Sturtevant, Alfred (Henry) — born Nov. 21, 1891, Jacksonville, Ill., U.S. died April 5, 1970, Pasadena, Calif. U.S. geneticist. He received his Ph.D. from Columbia University and taught principally at California Institute of Technology (1928–70). In 1912 he developed a… …   Universalium

  • Sturtevant, Alfred (Henry) — (21 nov. 1891, Jacksonville, Ill., EE.UU.–5 abr. 1970, Pasadena, Cal.). Genetista estadounidense. Obtuvo un Ph.D. en la Universidad de Columbia y enseñó principalmente en el Instituto Tecnológico de California (1928–70). En 1912 desarrolló una… …   Enciclopedia Universal

  • Alfred Henry Sturtevant — (* 21. November 1891; † 5. April 1970) war ein amerikanischer Genetiker, der 1913 die erste einfache Genkarte eines Organismus erstellte. Er arbeitete gemeinsam mit anderen aus der Gruppe um Thomas Hunt Morgan an der Taufliege Drosophila… …   Deutsch Wikipedia

  • Alfred H. Sturtevant — Alfred Henry Sturtevant (* 21. November 1891; † 5. April 1970) war ein amerikanischer Genetiker, der 1913 die erste einfache Genkarte eines Organismus erstellte. Er arbeitete gemeinsam mit anderen aus der Gruppe um Thomas Hunt Morgan an der… …   Deutsch Wikipedia

  • Alfred Sturtevant — Infobox Scientist name = Alfred Henry Sturtevant image width = caption = birth date = birth date|1891|11|21|mf=y birth place = death date = death date and age|1970|4|5|1891|11|21|mf=y death place = residence = citizenship = nationality = USA… …   Wikipedia

  • Alfred — /al fred, frid/, n. a male given name: from the Old English words meaning elf and counsel. * * * I known as Alfred the Great born 849 died 899 King of Wessex (871–99) in southwestern England. He joined his brother Ethelred I in confronting a… …   Universalium

  • Alfred — (as used in expressions) Adler, Alfred Ayer, Sir A(lfred) J(ules) Binet, Alfred Birney, (Alfred) Earle Blalock, Alfred Brauchitsch, (Heinrich Alfred) Walther von Alfred Bryant Renton Leonard Alfred Schneider Alfred Gerald Caplin Cerf, Bennett… …   Enciclopedia Universal

  • henry — /hen ree/, n., pl. henries, henrys. Elect. the SI unit of inductance, formally defined to be the inductance of a closed circuit in which an electromotive force of one volt is produced when the electric current in the circuit varies uniformly at a …   Universalium

  • Henry — /hen ree/, n. 1. Joseph, 1797 1878, U.S. physicist. 2. O., pen name of William Sydney Porter. 3. Patrick, 1736 99, American patriot, orator, and statesman. 4. Cape, a cape in SE Virginia at the mouth of the Chesapeake Bay. 5. Fort. See …   Universalium

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