Evolutionary dynamics and chromosomal distribution of repetitive sequences on chromosomes of Aegilops speltoides revealed by genomic in situ hybridization
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چکیده
منابع مشابه
Retrospective assessment of radiation dose by Fluorescence In Situ Hybridization and evaluation of stable chromosomal aberrations
Estimation of absorbed dose for radiation workers or person involved in different radiological accident is the aim of biodosimetry. Cytogenetic methods are the most current and applicable biodosimetry tools. In chronic or protracted exposure, fluorescence in situ hybridization (FISH), stable chromosomal aberration is used for estimation of absorbed dose. For precise estimation of absorbed dose,...
متن کاملB Chromosomes of Aegilops speltoides Are Enriched in Organelle Genome-Derived Sequences
B chromosomes (Bs) are dispensable components of the genome exhibiting non-Mendelian inheritance. Chromosome counts and flow cytometric analysis of the grass species Aegilops speltoides revealed a tissue-type specific distribution of the roughly 570 Mbp large B chromosomes. To address the question whether organelle-to-nucleus DNA transfer is a mechanism that drives the evolution of Bs, in situ ...
متن کاملMapping small DNA sequences by fluorescence in situ hybridization directly on banded metaphase chromosomes.
A procedure for mapping small DNA probes directly on banded human chromosomes by fluorescence in situ hybridization has been developed. This procedure allows for the simultaneous visualization of banded chromosomes and hybridization signal without overlaying two separate photographic images. This method is simple and rapid, requires only a typical fluorescence microscope, has proven successful ...
متن کاملAnalysis of genes and chromosomes by nonisotopic in situ hybridization.
Nonisotopic in situ hybridization is a powerful tool to analyze the organization of complex genomes. Current approaches utilizing this technique for the analysis of linear and spatial genome organizations are presented. Clinical applications of these approaches, which open new avenues for diagnosis of disease-related chromosomal changes, are also discussed.
متن کاملAssociation between simple sequence repeat-rich chromosome regions and intergenomic translocation breakpoints in natural populations of allopolyploid wild wheats.
BACKGROUND AND AIMS Repetitive DNA sequences are thought to be involved in the formation of chromosomal rearrangements. The aim of this study was to analyse the distribution of microsatellite clusters in Aegilops biuncialis and Aegilops geniculata, and its relationship with the intergenomic translocations in these allotetraploid species, wild genetic resources for wheat improvement. METHODS T...
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ژورنال
عنوان ژورنال: Heredity
سال: 2001
ISSN: 0018-067X,1365-2540
DOI: 10.1038/sj.hdy.6888910