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  • 1
    Electronic Resource
    Electronic Resource
    MHC Evolution and Development of a Recognition System (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 712 (1994), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1994.tb33558.x
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  • 2
    Electronic Resource
    Electronic Resource
    Ancient Linkage Groups and Frozen Accidents (1973)
    [s.l.] : Nature Publishing Group
    Nature 244 (1973), S. 259-262 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Evidence is presented that the genetic differences between man and the other mammals are extremely small. This supports the concept that natural selection conserves the status quo. The idea of evolution viewed as a succession of “frozen accidents” is discussed, taking as an example the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/244259a0
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  • 3
    Electronic Resource
    Electronic Resource
    Aggregation chimaeras (1977)
    [s.l.] : Nature Publishing Group
    Nature 267 (1977), S. 84-84 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT might be said that the laboratory mouse is the Escherichia coli of modern mammalian biology, since great things are expected of this species. Mouse genetics is one field in which the Woman's Liberation Move-ment is already passe, for the field has long been dominated by a group of outstanding ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/267084a0
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  • 4
    Electronic Resource
    Electronic Resource
    Hormone-like role of H–Y antigen in bovine freemartin gonad (1976)
    [s.l.] : Nature Publishing Group
    Nature 261 (1976), S. 597-599 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Proposed virilisation mechanism of bovine freemartin gonad. Host XX germ cell and somatic elements are shaded; a donor XY cell is shown in black. We suggest that XX gonadal cells, although not possessing H?Y antigen, are equipped with specific receptor sites as well as anchorage sites for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/261597a0
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  • 5
    Electronic Resource
    Electronic Resource
    H–Y antigen and the origin of XY female wood lemmings ( Myopus schisticolor ) (1976)
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 638-639 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] H?Y antigen is a cell surface component that is present in males of all mammalian species tested, including the human5. In intersexual or sex-reversed individuals, testicular differentiation is more closely correlated with presence of H?Y antigen than it is with presence of an intact Y chromosome6. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/264638a0
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  • 6
    Electronic Resource
    Electronic Resource
    Cytogenetics stages its own revival (1979)
    [s.l.] : Nature Publishing Group
    Nature 282 (1979), S. 169-169 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Human and Mammalian Cytogenetics: An Historical Perspective. By T.C. Hsu. Pp. 186. (Springer: New York, Heidelberg and Berlin, 1979.) Paperback $13.20; DM24. IN 1959, Jerome Lejeune of Paris discovered the trisomy of chromosome 21 in those unfortunate individuals afflicted with the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/282169a0
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  • 7
    Electronic Resource
    Electronic Resource
    Possible role for H–Y antigen in the primary determination of sex (1975)
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 235-236 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The same cannot be said of the part that the Y chromosome plays in inducing testicular development, because no relevant mutation of the presumptive testis-determining gene has been found in any mammalian species, and because we have no clue, therefore, as to the nature of any product specified by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/257235a0
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  • 8
    Electronic Resource
    Electronic Resource
    Sex-linkage of the Glucose-6-phosphate Dehydrogenase Gene in Equidae (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 115-116 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Glucose-6-phosphate dehydrogenase (G6PD) deficiency and G6PD electrophoretic phenotypes are sex-linked in man. In order to establish whether this is true in other animals, we studied the electrophoretic mobility of G6PD in the Equidae. To prepare the haemolysate, red cells were washed after ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210115a0
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  • 9
    Electronic Resource
    Electronic Resource
    On the selective elimination of Y-bearing sperm (1978)
    Springer
    Immunogenetics 7 (1978), S. 13-16 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The potential use of antibodies that selectively recognize either X-bearing or Y-bearing sperm is self-evident. Thus our attention was directed to the fact that under optimal conditions, H-Y antibody lyses 50% of mouse spermatozoa. Accordingly, we asked whether expression of H-Y antigen is haploid in spermatozoa from XY male mice heterozygous for the autosomal dominantSxr gene, for if H-Y expression were haploid, H-Y antibody would be expected to kill 75% of spermatozoa derived from these XY,Sxr/- males. However, maximal lysis remained at the 50% level, which indicates that haploid expression of H-Y antigen and the potential immunoselection of Y-(or X-) bearing spermatozoa are unlikely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01843982
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  • 10
    Electronic Resource
    Electronic Resource
    The Reason for as Well as the Consequence of the Cambrian Explosion in Animal Evolution (1997)
    Springer
    Journal of molecular evolution 44 (1997), S. S023 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Cambrian explosion — Cellular life — Pananimalia genome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. The first 1 billion years of our 4.5-billion-year-old planet were extremely violent, chacarterized by constant meteorite bombardment. Therefore, it is with a great surprise that we note that cellular life flourished 3.5 billion years ago. It appears that the cellular life came into being as soon as the earth's environment became hospitable. Because the main ingredient of the Archean sea was sodium bicarbonate, neither archeobacteria nor eubacteria but rather photosynthesizing organisms dominated—initially, prokaryotic cyanobacteria, soon joined by eukaryotic blue-green algae. These consumers of carbon dioxide were also releasers of molecular oxygen. The toil of 3 billion years by these releasers of molecular oxygen finally triggered the Cambrian animal explosion. With exceptions of two animal phyla, Porifera and Coelenterata, which amde slightly earlier appearances, nearly all other extant animal phyla sprang into almost simultaneous existence within 6 to 10 million years. The notion of the Cambrian pananimalia genome was advanced to explain various evolutionary consequences of this Cambrian explosion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00000055
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