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  • 1970-1974  (2)
  • 1970  (2)
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  • 1970-1974  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    A non-doubling DNA series in somatic tissues of the locusts Schistocerca gregaria (Forskål) and Locusta migratoria (Linn.) (1970)
    Springer
    Chromosoma 29 (1970), S. 446-461 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Locusta migratoria has only 70% of the germ line DNA value of the related species Schistocerca gregaria in spite of a uniform karyotype. This difference is maintained in the nuclei of the testis wall, ovariole tip, mid-gut diverticulum, Malpighian tubule and fat. The distribution of nuclear DNA contents is tissue specific but the peaks in the distributions do not conform with members of a doubling series. It is suggested that both phenomena may be connected with the mechanism of tissue differentiation in insects, the latter by differential replication of those chromosome regions which are active in particular tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281927
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    DNA values in somatic tissues of Dermestes (Dermestidae: Coleoptera) (1970)
    Springer
    Chromosoma 31 (1970), S. 321-330 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The organisation of the male Malpighian tubule has been investigated in the coleopteran genus Dermestes. Nuclear number is found to be more or less constant between species. However, the DNA values of these nuclei do not, in general, reflect the germ-line DNA value of the species since many of them do not conform with members of a doubling series. These phenomena may be interpreted as aspects of the control of tissue and organ size, the final dimensions of the Malpighian tubules being similar in spite of presumed differences in 2C cell size in the different species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321228
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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