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  • Nature Publishing Group  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Fracture and Fusion of Coccid Chromosomes (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 1419-1420 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the Coccoidea, the haploid chromosome number ranges from 2 to 20 (ref. 1). Since the basic number for the superfamily is in the range of n - 5 to 7, both increase and decrease have occurred in the evolution of the karyotype. The chromosomes of the coccids lack localized centromeres and fragments ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1911419a0
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  • 2
    Electronic Resource
    Electronic Resource
    Chromosomes in a Marsupial ( Potorous tridactylis ) Tissue Culture (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 406-406 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Fibroblast-like testis cells of Potorous tridactylis in tissue culture Fig. 2. Epithelial-like kidney cells of the same animal in tissue culture Fig. 3. Somatic chromosome complement of a tissue culture cell of the male Potorous tridactylis. A, the X, B, the Yl and C, the F2 chromosomes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/194406a0
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  • 3
    Electronic Resource
    Electronic Resource
    Chromosome imprinting and the mammalian X chromosome (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 165-168 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Chromosome imprinting is the process by which one of two genetically homologous chromosomes is predetermined to function differently from the other at a subsequent stage in development. In the coccid insects, imprinting occurs in the egg, at the time of fertilisation; it probably occurs at the same ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253165a0
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  • 4
    Electronic Resource
    Electronic Resource
    Base Ratios in DNA in Male and Female Pseudococcus citri (1964)
    [s.l.] : Nature Publishing Group
    Nature 203 (1964), S. 104-104 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Except for a few tissues, the paternal set maintains its heterochromaticity throughout the life of the male; at spermatogenesis it is segregated from the maternal, or euchromatic, set, and is not included in the sperm. In certain related forms, however, the heterochromatic state is reversed during ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/203104a0
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