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  • Articles  (3)
  • bacteriology  (2)
  • Animals
  • Chemical Engineering
  • Electronic structure and strongly correlated systems
  • United States
  • Springer  (3)
  • American Association for the Advancement of Science (AAAS)
  • History  (3)
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  • Articles  (3)
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  • Springer  (3)
  • American Association for the Advancement of Science (AAAS)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of the history of biology 33 (2000), S. 113-139 
    ISSN: 1573-0387
    Keywords: bacteria ; bacteriology ; conjugation ; gender ; genetics ; language ; sex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract Between 1946 and 1960, a new phenomenon emerged in the field of bacteriology. “Bacterial sex,” as it was called, revolutionized the study of genetics, largely by making available a whole new class of cheap, fast-growing, and easily manipulated organisms. But what was “bacterial sex?” How could single-celled organisms have “sex” or even be sexually differentiated? The technical language used in the scientific press – the public and inalienable face of 20th century science – to describe this apparently neuter organism was explicit: the cells “copulated,” had “intimate contract,” “conjugal unions,” and engaged in “ménage ã trois” relationships. And yet, to describe bacteria as sexually reproducing organisms, the definition of sex itself had to change. Despite manifold contradictions and the availability of alternative language, the notion of sexually active (even promiscuous) single-celled organisms has persisted, even into contemporary textbooks on cell biology and genetics. In this paper I examine the ways in which bacteria were brought into the genetic fold, sexualized, and given gender; I also consider the issues underlying the durability of “bacterial sex.”
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of the history of biology 33 (2000), S. 141-180 
    ISSN: 1573-0387
    Keywords: bacteriology ; biochemistry ; Robert Earle Buchanan (1883–1973) ; Delft ; Disciplinary evolution ; Iowa State College/University ; Albert Jan Kluyver (1888–1956) ; scientific careers ; scientific progress ; Chester Hamlin Werkman (1893–1962)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract This essay explores connections between bacteriology and the disciplinary evolution of biochemistry in this country during the 1930s. Many features of intermediary metabolism, a central component of biochemistry, originated as attempts to answer fundamental bacteriological questions. Thus, many bacteriologists altered their research programs to answer these questions. In so doing they changed their disciplinary focus from bacteriology to biochemistry. Chester Hamlin Werkman's (1893–1962) Iowa State career illustrates the research perspective that many bacteriologists adopted. As a junior faculty member in the Bacteriology Department in the late 1920s, Werkman faced a powerful professional dilemma: establishing a research identity that distinguished him from his colleagues with flourishing national and international reputations. His solution was to radically alter his research program from traditional bacteriology to a biochemistry program, which reflected the influence of the Dutch microbiologist/biochemist, Albert Jan Kluyver (1888–1956). Werkman was extremely successful in this career change. His laboratory made significant contributions to biochemistry, and Werkman achieved a notable degree of personal success. His career began in the shadow of his departmental bacteriological colleagues; within a decade he became the department's dominant research figure, as a biochemist. Werkman's personal success, however, had profound consequences for the disciplinary future of bacteriology at Iowa State.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of the history of biology 32 (1999), S. 163-195 
    ISSN: 1573-0387
    Keywords: cytogenetics ; diagrams ; genetics ; illustrations ; McClintock ; models ; molecular biology ; photographs ; twentieth-century ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract Barbara McClintock won the Nobel Prize in 1983 for her discovery of mobile genetic elements. Her Nobel work began in 1944, and by 1950 McClintock began presenting her work on “controlling elements.” McClintock performed her studies through the use of controlled breeding experiments with known mutant stocks, and read the action of controlling elements (transposons) in visible patterns of pigment and starch distribution. She taught close colleagues to “read” the patterns in her maize kernels, “seeing” pigment and starch genes turning on and off. McClintock illustrated her talks and papers on controlling elements or transposons with photographs of the spotted and streaked maize kernels which were both her evidence and the key to her explanations. Transposon action could be read in the patterns by the initiated, but those without step by step instruction by McClintock or experience in maize often found her presentations confusing. The photographs she displayed became both McClintock's means of communication, and a barrier to successful presentation of her results. The photographs also had a second and more subtle effect. As images of patterns arrived at through growth and development of the kernel, they highlight what McClintock believed to be the developmental consequences of transposition, which in McClintock's view was her central contribution, over the mechanism of transposition, for which she was eventually recognized by others. Scientific activities are extremely visual, both at the sites of investigation and in communication through drawings, photographs, and movies. Those visual messages deserve greater scrutiny by historians of science.
    Type of Medium: Electronic Resource
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