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  • 1
    Electronic Resource
    Electronic Resource
    Localisation of NORs and counterstain-enhanced fluorescence studies in Salmo gairdneri and Salmo trutta (Pisces, Salmonidae) (1986)
    Springer
    Theoretical and applied genetics 71 (1986), S. 703-707 
    Details
    ISSN: 1432-2242
    Keywords: Nucleolus organizer ; Chromomycin A3 ; Fluorescence ; Salmo gairdneri ; Salmo trutta
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The karyotypes of the rainbow trout (Salmo gairdneri R.) and the brown trout (Salmo trutta L.) were analyzed by means of silver staining and the chromomycin A3/distamycin A/DAPI fluorescence banding technique. The nucleolus organizer regions (NORs) were localized at the secondary constrictions of chromosome no. 14 in S. gairdneri and of chromosome no. 10 in S. trutta. Additional silver positive dots were observed at or close to several centromeres in S. gairdneri. Brilliant chromomycin A3 (CMA3) fluorescence heterochromatin blocks were localized on both sides of the nucleolar constrictions in S. gairdneri. A polymorphic CMA3 positive band was detected close to the NORs of S. trutta. No distamycin A/DAPI intense heterochromatin blocks were detected in the genomes of the two Salmo species investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263267
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  • 2
    Electronic Resource
    Electronic Resource
    Nucleolus organizer regions and heterochromatin in the zebu (Bos indicus L.) (1987)
    Springer
    Theoretical and applied genetics 73 (1987), S. 832-835 
    Details
    ISSN: 1432-2242
    Keywords: Zebu cattle ; Nucleolus organizers ; Heterochromatin polymorphisms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Ag-NOR staining and a counterstain enhanced fluorescence technique (chromomycin A3/distamycin A/DAPI-staining = CDD-method) and G-banding, respectively, have been applied to the zebu (Bos indicus L.) chromosomes. The nucleolus organizer regions (NORs) were found in the telomeric regions of chromosomes nos. 2, 3, 4, 11, and 28. CDD staining led to a well-defined R-banding pattern along the chromosome arms and to the visualization of centric heterochromatic bands of variable sizes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289387
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  • 3
    Electronic Resource
    Electronic Resource
    Chromosome markers in cattle (1986)
    Springer
    Theoretical and applied genetics 71 (1986), S. 669-672 
    Details
    ISSN: 1432-2242
    Keywords: Taurus cattle ; Zebu cattle ; Bali cattle ; Chromosome polymorphisms ; G-banding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Giemsa banding in cattle chromosomes enables the demarcation of both centromeric areas as pale regions and banding patterns along the chromosome arms. These are valuable in identifying all the chromosomes of a given karyotype. A high degree of intra- and inter-individual variation in the size of the centromeres was observed. This variation is useful for the identification of each individual and provides a broad base of chromosome markers for cattle breeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263262
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