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  • 1
    ISSN: 1573-4927
    Keywords: DNA fingerprinting ; population genetics ; chamois ; hypervariable minisatellites ; polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Hypervariable minisatellite DNA probes 33.15 and 33.6, originally developed for studies in human populations, were used to study genetic variation in chamois (Rupicapra rupicapra). The mean number of bands per individual was 25 for probe 33.15 and 15 for probe 33.6. The average band frequency was 0.33 for both probes. The mean similarity was 0.44, greater than that reported for human and natural populations and close to values found in domestic populations of mammals. This lack of variability could be related to the bottleneck suffered by the population due to large-scale hunting after the Spanish Civil War. Levels of variability are high compared with variability at the level of protein markers, so the use of minisatellite DNA is recommended for future population studies in this species. We did not find large genetic differences between subpopulations, indicating that the population is genetically homogeneous.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-4927
    Keywords: DNA fingerprinting ; population genetics ; chamois ; hypervariable minisatellites ; polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Hypervariable minisatellite DNA probes 33.15 and 33.6, originally developed for studies in human populations, were used to study genetic variation in chamois (Rupicapra rupicapra). The mean number of bands per individual was 25 for probe 33.15 and 15 for probe 33.6. The average band frequency was 0.33 for both probes. The mean similarity was 0.44, greater than that reported for human and natural populations and close to values found in domestic populations of mammals. This lack of variability could be related to the bottleneck suffered by the population due to large-scale hunting after the Spanish Civil War. Levels of variability are high compared with variability at the level of protein markers, so the use of minisatellite DNA is recommended for future population studies in this species. We did not find large genetic differences between subpopulations, indicating that the population is genetically homogeneous.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 76 (1988), S. 700-704 
    ISSN: 1432-2242
    Keywords: Canalization ; Stabilizing selection ; Natural selection ; Dorsocentral bristles ; Positional pattern
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Four lines of Drosophila melanogaster previously selected for a stabilized phenotype of two extra dorsocentral bristles were examined for 20 generations of canalizing selection and relaxation of selection. A substantial frequency of flies with either two anterior or two posterior extra bristles was maintained in the relaxed lines. These patterns were the only ones tolerated by natural selection, i.e., the only symmetric ones. It was concluded that anterior and posterior dorsocentral bristles are two independent development structures, and the results are discussed in relation to two proposed genetic systems for bristle determination.
    Type of Medium: Electronic Resource
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