ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology1997
Nature of B chromosomes in the harvest mouse Reithrodontomys megalotis by fluorescence in situ hybridization (FISH).
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Evolution of B Chromosomes: From Dispensable Parasitic Chromosomes to Essential Genomic Players.Frontiers in genetics · 2021Review
- Review
- First report on B chromosome content in a reptilian species: the case of Anolis carolinensis.Molecular genetics and genomics : MGG · 2019Article
- Review
- Genes on B chromosomes of vertebrates.Molecular cytogenetics · 2014Article
- Transcription of a protein-coding gene on B chromosomes of the Siberian roe deer (Capreolus pygargus).BMC biology · 2013Article
- Differential gene expression in yellow-necked mice Apodemus flavicollis (Rodentia, Mammalia) with and without B chromosomes.Chromosoma · 2005Article
- B-chromosome evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2000Review
- DNA profiling of B chromosomes from the yellow-necked mouse Apodemus flavicollis (Rodentia, Mammalia).Genome research · 2000Article
- Heterogeneity and meiotic behaviour of B and sex chromosomes, banding patterns and localization of (TTAGGG)n sequences by fluorescence in situ hybridization in the neotropical water rat Nectomys (Rodentia, Cricetidae).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 1998Article
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Abstract
Using fluorescence in situ hybridization, we examined the characteristics of two types of B chromosomes in harvest mice of the genus Reithrodontomys. B chromosomes were interrogated with rDNA, telomeric repeat, LINE element and centromeric heterochromatin probes. The two types of B chromosomes share the following features: (a) telomeres present on the ends of both arms; (b) hybridization to LINE probes; (c) absence of hybridization to the ribosomal gene probes; (d) C-band-positive centromeric regions; and (e) euchromatic arms. They differ as follows: (a) the larger B element hybridizes to the centromeric heterochromatin (pMeg-1) probe whereas the smaller B element does not; (b) the amount of C-band-positive material is reduced in the smaller B chromosome relative to that present on the larger B chromosome; and (c) the smaller element is reduced in size by about a third. It is concluded that the larger B chromosome arose as a leftover centromere from centric fusion, whereas the smaller element has a different origin perhaps as an intact fragment or as an amplified region from the A chromosomes. The presence of euchromatic regions on B chromosomes may account for their survival in the karyotype.
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