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  • 1
    Electronic Resource
    Electronic Resource
    Dichorial One-Egg Twins in the Mouse (1960)
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 339-340 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The evidence for type 1 consists of two extreme sets of data. On one hand, it has been found in the rat2 and rabbit3 that after killing one blastomere at the two-cell stage, the other one is capable of developing into a normal embryo. The potentiality of a single blastomere to develop into an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/187339a0
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  • 2
    Electronic Resource
    Electronic Resource
    Number of 5-Alleles in a Population (1947)
    [s.l.] : Nature Publishing Group
    Nature 160 (1947), S. 337-337 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DATA collected by the late R. D. Williams on self-incompatibility in two clover varieties are presented in the current issue of the Journal of Genetics1. A comparison was made between all the alleles in a sample of each variety, involving about a thousand separate crosses. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/160337a0
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  • 3
    Electronic Resource
    Electronic Resource
    Testing Chemicals for Mutagenicity in a Mammal (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 205-206 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The mouse is, however, not so impracticable as test material for mutagenicity as Prof. Liining implies. The most readily detectable mutation in the mouse is the dominant lethal, which is probably due to chromosome loss. It manifests itself as lethality in utero of embryos arising from gametes in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210205a0
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  • 4
    Electronic Resource
    Electronic Resource
    Mutations induced in the Mouse with Tritiated Thymidine (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 705-706 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The last opportunity for germ cells to pick up labelled thymidine should be the early spermatocyte when it is synthesizing deoxyribonucleic acid. The first labelled sperm would then appear in the fifth week after injection. This was confirmed. One group of males was mated from the fourth week ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/193705a0
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  • 5
    Electronic Resource
    Electronic Resource
    Timing of Spermatogenesis in Drosophila melanogaster using Tritiated Thymidine (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 299-300 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Newly emerged males were injected with 0-08 mm.8 tritiated thymidine (activity 25 pic./ml.) into the abdomen, using a fine glass pipette, and most of them mated at the rate of two females per day per male. On each successive day following injection, the testes of sample males were dissected and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/193299b0
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  • 6
    Electronic Resource
    Electronic Resource
    Sensitivity of Immature Mouse Sperm to the Mutagenic Effects of X-Rays (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 727-727 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nevertheless, the cumulative cytological evidence is such that it seems necessary to modify my original conclusions and assume that the sperm sampled during weeks four to seven had been irradiated as spermatocytes, not as spermatids. The peak in the third week would then after all be due, as ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179727a0
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  • 7
    Electronic Resource
    Electronic Resource
    Sensitivity of the Mouse Testis to the Mutagenic Action of X-rays (1956)
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 934-934 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The usual method of classifying sperm samples in the mouse is by time from irradiation rather than order of the litters conceived by it. This is the classification used by Russel and Hertwig, with whose results Auerbach and Slizynski compare their own. It would be of interest, therefore, to learn ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/177934a0
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  • 8
    Electronic Resource
    Electronic Resource
    Grafting Experiments between the Tomato Varieties, Golden Apple and Oxheart (1955)
    [s.l.] : Nature Publishing Group
    Nature 175 (1955), S. 1118-1120 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recent issue of Nature1, reference Was made to tomato-grafting experiments by Dr. L. Felfoldy of Hungary, whose results have been published in English2. A special feature of the work was that spectacular results had been obtained with the varieties Golden Apple and Oxheart, which are known in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1751118b0
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  • 9
    Electronic Resource
    Electronic Resource
    Trimorphism and Self-incompatibility in Narcissus (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 496-497 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1950, Dr. Fernandes kindly sent me from Portugal collections from two populations of N. triandrus var. concolor. Fifteen plants have flowered this spring. From this small amount of material it is already possible to draw several conclusions. 1. Like most other Narcissus species, homomorphic and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170496d0
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  • 10
    Electronic Resource
    Electronic Resource
    Mutations Induced in Drosophila by Ingested Phosphorus-32 (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 117-118 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It occurred to one of us that different radioactive elements, owing to their specific physiological activities, might differ in their intimate association with certain genes and therefore in the genetic changes they induced. Such differences, if they could be observed, might well provide a new line ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165117a0
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