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  • 1
    Electronic Resource
    Electronic Resource
    Habitat marking: males attracted to residual odors of twoDrosophila species (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 763-765 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We have found that males of the sibling speciesD. melanogaster andD. simulans are preferentially attracted to sites marked by the residual odors of conspecific females, especially if non-virgin. In natural populations, this could enhance sexual selection among males, and cause some isolation at the microhabitat level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949768
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  • 2
    Electronic Resource
    Electronic Resource
    Congenital Abnormalities and Competition in Man and Other Mammals at Different Maternal Ages (1963)
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 316-317 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In mice, however, the incidence of polydactyly, which in many stocks is determined by an incompletely penetrant recessive gene, decreases with age7'8. In guinea pigs, the same occurs for polydactyly9, whereas white spotting increases in incidence with age9. Searle10 examined the development of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/198316b0
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  • 3
    Electronic Resource
    Electronic Resource
    Homeostasis of the Sex Ratio in Drosophila (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 411-411 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The temperature regimes were 15 C., 24 C. for 8hr. and 15 C. for 16 hr., 24 C., 24 C. for 8 hr. and 31 C. for 16 hr., 31 C., and 31 C. for 16 hr. and 15 C. for 8 hr. At 10 a.m. and 6 p.m., the replicates under the fluctuating temperatures were changed from one temperature to the other, so ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186411a0
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  • 4
    Electronic Resource
    Electronic Resource
    Variation with Pressure of the Permittivity of Polythene (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 686-686 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The results showed that the effect in various types of polythene, and mixtures with small amounts of other polymers, was similar ; and that the main change of permittivity is that caused by the compression of the material. The remaining effect, interpreted as a variation in the polarizability a, is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179686a0
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  • 5
    Electronic Resource
    Electronic Resource
    Genetical Interference in Maize (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 161-162 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Graphs have been plotted of the arithmetic mean of map-distance for each triplet of genes against K for each chromosome. On the whole, with the exceptions of chromosome 3, for which the data are inadequate, and chromosome 8, for which there are no data, K = 1 at the metrical mid-arms assuming the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179161a0
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic Basis of Two Melanin Inhibitors in Drosophila melanogaster (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 411-412 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Phenyl-thio-carbamide is an organic sulphur compound which inhibits melanin formation by combining with copper ions, which are necessary for the action of the enzyme, tyrosinase1. The inhibitory action of silver nitrate, a heavy-metal compound, is presumably due to its interaction with the enzyme ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186411b0
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  • 7
    Electronic Resource
    Electronic Resource
    Competition between Genotypes in Drosophila melanogaster (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 271-271 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In a two-point back-cross linkage experiment, the proportion of competing genotypes is different in each phase. Considering such an experiment for two factors a and b which are somewhat inviable in the recessive state, four genotypes are obtained in the offspring : AB/ab, Ab/ab, aB/ab, ab/ab In ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/182271a0
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  • 8
    Electronic Resource
    Electronic Resource
    Evolution of Sex in the Flowering Plants of South Australia (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1673-1674 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. DISTRIBUTION OF SEX FORMS IN THE SPEOIBS OF THE SOUTH AUSTRALIAN AND ENGLISH FLORAS Sex form No. of species (with percentages in brackets) in : South Australian flora English flora Introduced Indigenous Hermaphrodite Monoecious Dioecious Mixed 445 (92-0) 1,871 (88-9 33 (6-8) 123 (5-8 3 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1811673a0
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  • 9
    Electronic Resource
    Electronic Resource
    Genetical Interference in Drosophila spp. (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 1815-1816 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It was therefore thought profitable to examine back-cross linkage data involving three or more genes in some of the other species of Drosophila. The method of analysis has been sketched by Parsons2.3. This involves plotting the Kosambi coefficient4, K, against the mean of the map distances for each ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1821815b0
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  • 10
    Electronic Resource
    Electronic Resource
    The Evolution of Overdominance: Natural Selection and Heterozygote Advantage (1961)
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 7-12 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HETEROSIS or hybrid vigour, inbreeding depression and the maintenance of balanced polymorphisms in natural populations have all been associated in one form or another with overdominance. The occurrence of overdominance may be viewed either as an intrinsic phenomenon or as the outcome of an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/190007a0
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