Franklin William Stahl (1929? )
نویسندگان
چکیده
Franklin William Stahl studied DNA replication, bacteriophages, and genetic recombination in the US during the mid-twentieth and early twenty-first centuries. With his colleague Matthew Meselson, Stahl performed an experiment called the Meselson-Stahl experiment, which provided evidence for a process called semi-conservative DNA replication. Semi-conservative replication is a process in which each strand of a parental DNA double helix serves as a template for newly replicated daughter strands, so that one parental strand is conserved in every daughter double helix. Those findings supported the Watson-Crick Model for DNA replication proposed in 1953 by James Watson [4] and Francis Crick [5], convincing many biologists about DNA ́s structure and replication in the 1950s. Stahl ́s genetics research, especially that of DNA replication, showed researchers how genetic information is distributed within a cell and is passed down from cell to cell.
منابع مشابه
The Meselson-Stahl Experiment (1957?1958), by Matthew Meselson and Franklin Stahl
In an experiment later named for them, Matthew Stanley Meselson and Franklin William Stahl in the US demonstrated during the 1950s the semi-conservative replication of DNA, such that each daughter DNA molecule contains one new daughter subunit and one subunit conserved from the parental DNA molecule. The researchers conducted the experiment at California Institute of Technology [5] (Caltech) in...
متن کاملEquilibrium Density Gradient Centrifugation in Cesium Chloride Solutions Developed by Matthew Meselson and Franklin Stahl
Matthew Meselson, Franklin Stahl, and Jerome Vinograd, developed cesium chloride, or CsCl, density gradient centrifugation in the 1950s at the California Institute of Technology [5], or Caltech, in Pasadena, California. Density gradient centrifugation enables scientists to separate substances based on size, shape, and density. Meselson and Stahl invented a specific type of density gradient cent...
متن کاملInsulin resistant diabetes mellitus in association with haemochromatosis.
INSULIN resistance in association with primary haemochromatosis has been reported on several occasions previously (Allen and Constam, 1929; Root, 1929; Wood and Fitzhugh, 1929; Engel, 1934; Eskind, Franklin and Lowell, 1953; Colwell and Weiger, 1956; Darnaud, Denard, Moreau, Voisin and Pujol, 1958; Uhry, Marcel and Cohen, 1958; Justin-Besancon, Pequignot, Deuil, Etienne, Magdelaine and Jullien,...
متن کاملCrossover Interference on NOR-bearing Chromosomes in Arabidopsis
Sandy Lam*, Sarah R. Horn*, Sarah J. Radford, Elizabeth A. Housworth, Franklin W. Stahl and Gregory P. Copenhaver* * Department of Biology and The Carolina Center for Genome Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Departments of Mathemat...
متن کاملThe Debate over DNA Replication Before the Meselson-Stahl Experiment (1953?1957)
Between 1953 and 1957, before the Meselson-Stahl experiment verified semi-conservative replication of DNA, scientists debated how DNA replicated. In 1953, James Watson [3] and Francis Crick [4] proposed that DNA was composed of two helical strands that wound together in a coil. Their model suggested a replication mechanism, later termed semi-conservative replication, in which parental DNA stran...
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