- Meselson, Matthew Stanley
U.S. molecular biologist.He received his Ph.D. from California Institute of Technology; from 1964 he taught at Harvard University. He conducted research with Franklin Stahl that showed that, during cell division, DNA splits into its two component strands, each of which acquires a newly synthesized partner strand before passing into one of the daughter cells.
* * *▪ American biologistborn May 24, 1930, Denver, Colorado, U.S.American molecular biologist notable for his experimental confirmation of the Watson-Crick theory of the structure and method of replication of deoxyribonucleic acid ( DNA).Meselson obtained his Ph.D. at the California Institute of Technology (Caltech), Pasadena, in 1957. His research, with Franklin W. Stahl (Stahl, Franklin W.), showed that during cell division, the replication of DNA in the cell is “semi-conservative”; that is, the DNA splits into its two component strands, each of which acquires a newly synthesized partner before passing into one of the daughter cells. Bacteria cultured in a nutrient containing a heavy isotope of nitrogen incorporated it in their DNA. When the bacteria were returned to nutrients containing ordinary nitrogen, their reproduction formed cells that had a new medium-weight DNA. (A new technique, density-gradient centrifugation, could be used to separate such molecules by weight.) On heating, this DNA separated into half heavy and half light strands. Meselson and Stahl concluded that the new DNA molecules were composed of one strand of each: the heavy inherited, the light newly synthesized. Meselson was on the staff at Caltech until 1960, when he was appointed associate professor of biology at Harvard University. He continued to study problems in the synthesis of DNA, RNA, and proteins.
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Meselson, Matthew Stanley — Meselson , Matthew Stanley … Scientists
Meselson , Matthew Stanley — (1930–) American molecular biologist Meselson, who was born in Denver, Colorado, studied liberal arts at the University of Chicago and physical chemistry at the California Institute of Technology, Pasadena. After he obtained his PhD in 1957 he… … Scientists
Meselson, Matthew Stanley — (n. 24 may. 1930, Denver, Col., EE.UU.). Biólogo molecular estadounidense. Obtuvo un Ph.D. en el Instituto Tecnológico de California; desde 1964 enseñó en la Universidad Harvard. Junto con Franklin Stahl realizó investigaciones que demostraron… … Enciclopedia Universal
Matthew Meselson — Matthew S. Meselson Born 24 May 1930 (1930 05 24) (age 81) Denver, Colorado, USA Citizenship USA … Wikipedia
Meselson — Matthew Meselson. Matthew Stanley Meselson (* 24. Mai 1930 in Denver, Colorado) ist ein US amerikanischer Genetiker, Biologe und Chemiker. Leben Meselson studierte Chemie an der Univer … Deutsch Wikipedia
Stanley — Stanley, Wendell Meredith Stanley, sir Henry Morton * * * (as used in expressions) Baldwin (de Bewdley), Stanley, 1 conde Becker, Gary S(tanley) Derby, Edward (George Geoffrey Smith) Stanley, 14 conde de Donen, Stanley Eddington, Sir Arthur… … Enciclopedia Universal
Stanley — /stan lee/, n. 1. Arthur Penrhyn /pen rin/, (Dean Stanley) 1815 81, English clergyman and author. 2. Edward George Geoffrey Smith, 14th Earl of Derby, 1799 1869, British statesman: prime minister 1852, 1858 59, 1866 68. 3. Francis Edgar, 1849… … Universalium
Matthew — /math yooh/, n. 1. one of the four Evangelists, a customs collector from Capernaum, summoned to be one of the 12 apostles: originally called Levi. Matt. 9:9 13. 2. the first Gospel. Abbr.: Matt. 3. a male given name. * * * (as used in… … Universalium
Matthew — (as used in expressions) Arnold, Matthew Barrie, Sir James (Matthew) Boulton, Matthew Flinders, Matthew Hale, Sir Matthew Lewis, Matthew Gregory Meselson, Matthew Stanley Perry, Matthew C(albraith) Petrie, Sir (William Matthew) Flinders Ridgway,… … Enciclopedia Universal
Matthew Meselson — Matthew Stanley Meselson (* 24. Mai 1930 in Denver, Colorado) ist ein US amerikanischer Genetiker, Biologe und Chemiker. Leben Meselson studierte Chemie an der University of Chicago und schloss sein Studium am California Institute of Technology… … Deutsch Wikipedia