McClung, Clarence E

McClung, Clarence E

▪ American zoologist
born April 6, 1870, Clayton, Calif., U.S.
died Jan. 17, 1946, Swarthmore, Pa.

      American zoologist whose study of the mechanisms of heredity led to his 1901 hypothesis that an extra, or accessory, chromosome was the determiner of sex (sex chromosome). The discovery of the sex-determining chromosome provided some of the earliest evidence that a given chromosome carries a definable set of hereditary traits. He also studied how the behaviour of chromosomes in the sex cells of different organisms affects their heredity.

      McClung was educated at the University of Kansas (Ph.D., 1902), where he became a professor and later dean of the medical school. In 1912 he went to the University of Pennsylvania as head of the zoological laboratories, a position he held until his retirement in 1940.

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Universalium. 2010.

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  • McClung, Clarence E(rwin) — born April 6, 1870, Clayton, Calif., U.S. died Jan. 17, 1946, Swarthmore, Pa. U.S. zoologist. He received his Ph.D. from the University of Kansas. His study of the mechanisms of heredity led to his hypothesis (1901) that an extra, or accessory,… …   Universalium

  • McClung, Clarence E(rwin) — (6 abr. 1870, Clayton, Cal., EE.UU.–17 ene. 1946, Swarthmore, Pa.). Zoólogo estadounidense. Obtuvo un Ph.D. en la Universidad de Kansas. El estudio de los mecanismos de la herencia lo condujo a la hipótesis (1901) de que un cromosoma extra o… …   Enciclopedia Universal

  • Clarence Erwin McClung — Born April 5, 1870 …   Wikipedia

  • clarence — /klar euhns/, n. a closed, four wheeled carriage, usually with a glass front, with seats inside for four persons. [1830 40; named after Duke of Clarence (1765 1837), later William IV] * * * (as used in expressions) Birdseye Clarence Darrow… …   Universalium

  • Clarence — /klar euhns/, n. a male given name: from a Latin word meaning clear one. * * * (as used in expressions) Birdseye Clarence Darrow Clarence Seward William Clarence Eckstein Lewis Clarence Irving Lowry Clarence Malcolm McClung Clarence Erwin Thomas… …   Universalium

  • Clarence — (as used in expressions) Birdseye, Clarence Darrow, Clarence (Seward) William Clarence Eckstein Lewis, C(larence) I(rving) Lowry, (Clarence) Malcolm McClung, Clarence E(rwin) Thomas, Clarence …   Enciclopedia Universal

  • Clarence Erwin McClung — (* 6. April 1870 in Clayton, Kalifornien; † 17. Januar 1946 in Swarthmore, Pennsylvania) war ein US amerikanischer Zoologe, Paläontologe und Genetiker. Er entdeckte gemeinsam mit Hermann Henking (1858–1942) im Jahr 1891 die Geschlechtsbestimmung… …   Deutsch Wikipedia

  • McClung — is the name of: A. Colin McClung, agricultural scientist Alexander Keith McClung (1811–1855), diplomat Charles McClung McGhee (1828–1907), railroad tycoon and financier Charles McClung (1761–1835), politician, and surveyor Clarence Erwin McClung… …   Wikipedia

  • McClung — steht für ein US amerikanisches Old Time Duo, siehe McClung Brothers McClung ist der Familienname folgender Personen: Clarence Erwin McClung (1870–1946), amerikanischer Zoologe und Genetiker Nellie McClung (1873–1951), kanadische Feministin,… …   Deutsch Wikipedia

  • Chromatide — Schematische Darstellung eines Metaphase Chromosoms. Es besteht aus zwei Chromatiden (das rechte mit (1) bezeichnet), die am Centromer (2) zusammenhängen. Der kurze (3) und lange Arm (4) des rechten Chromatids ist ebenfalls gekennzeichnet. Der… …   Deutsch Wikipedia

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