Comparative Analysis (Hippotragini versus Caprini, Bovidae) of X-Chromosome's Constitutive Heterochromatin by in situ Restriction Endonuclease Digestion: X-Chromosome Constitutive Heterochromatin Evolution
نویسندگان
چکیده
منابع مشابه
Chromosome restriction enzyme digestion in domestic pig (Sus scrofa) constitutive heterochromatin arrangement.
The bimodal karyotype of pig appears to contain two types of constitutive heterochromatin, reflecting different satellite DNA families: GC-rich heterochromatin located mainly in the centromeric regions of the biarmed chromosomes, and less-GC-rich heterochromatin in the centromeric regions of the one-armed chromosomes. In order to better discriminate this constitutive heterochromatin, we treated...
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Cytogenetic analyses of triatomines are considered to be important taxonomic tools. Thus, we analyzed the pattern of constitutive heterochromatin in 7 species of triatomine with fragmentation of the sex chromosome X, focusing on the cytotaxonomy of these triatomines. The species analyzed included Triatoma vitticeps, Triatoma melanocephala, Triatoma tibiamaculata, Triatoma protracta, Meccus pall...
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Conventional alkaline C-banding was found to be an effective additional step in restriction endonuclease banding to improve staining contrast and to reveal hidden changes in the heterochromatic blocks. Examples of these cases are demonstrated on the bovine chromosome set using Hinf I and Taq I endonucleases in the digestion experiments.
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Constitutive heterochromatin (HC = C-banding) distribution was studied in pig (Sus 5crofa) chromosomes from 20 animals belonging to Cinta Senese and Calabrese breeds raised in southern Italy. The use of CBG-banding, sequential GBG/CBA-banding and sequential GBG/ AgNOR/CBA-banding techniques allowed more detailed characterization of C-banding patterns in pig chromosomes (SSC). The following feat...
متن کاملConstitutive heterochromatin polymorphisms in human chromosomes identified by whole comparative genomic hybridization
Whole comparative genomic hybridization (W-CGH) is a new technique that reveals cryptic differences in highly repetitive DNA sequences, when different genomes are compared using metaphase or interphase chromosomes. W-CGH provides a quick approach to identify differential expansion of these DNA sequences at the single-chromosome level in the whole genome. In this study, we have determined the fr...
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ژورنال
عنوان ژورنال: Genetica
سال: 2004
ISSN: 0016-6707
DOI: 10.1023/b:gene.0000039859.33467.46