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  • 1960-1964  (2)
  • 1955-1959  (1)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    A New Technique for the Study of Laboratory Populations of Drosophila (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 1495-1495 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The cages in operation at the present time (Fig. 1) are constructed of light gauge galvanized iron. Three rectangular section wire mesh channels which carry the food dishes run lengthwise between the doors at either end. The bottom of the cage is formed by an inverted pyramid terminating beneath in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1801495a0
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    facet.materialart.
    Unknown
    Tithe Disputes in Medieval London. (1963)
    Harlow, etc. : Periodicals Archive Online (PAO)
    English Historical Review. 78:306 (1963:Jan.) 1 
    Details
    ISSN: 0013-8266
    Topics: History
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0027-1963-078-06-000001
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Genetic differentiation within laboratory populations ofDrosophila pseudoobscura (1964)
    Springer
    Genetica 35 (1964), S. 270-286 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Populations ofDrosophila pseudoobscura Frolowa initially polymorphic for the third chromosome gene arrangements Standard (ST) and Chiricahua (CH) were allowed to colonise systems of interconnected cages in which each section was subjected to a different regime of temperature and illumination. Estimates of gross productivity and migrational tendencies revealed major differences in favourability amongst the contrasting environments offered in the component units of the three multiple environment cage systems examined. Within each group of interconnected cages migration was permitted continuously throughout the experiments. The development of genetic divergence between the interconnected subpopulations was assessed by comparison of the relative frequencies of the ST and CH gene arrangements, sex-ratio, morphology, genetic variance, developmental stability and behaviour in relation to food preference shown by each subpopulation. In each of the three systems tested significant genetic differentiation between adjoining subpopulations resulted from natural selection within 25–30 generations, in spite of high migration rates and therefore potentially high gene flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01804895
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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