Variability of the nucleolus organizer regions and the presence of the rDNA genes in the supernumerary chromosome of Akodon aff. arviculoides (Cricetidae, Rodentia)

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dc.contributor.authorYonenaga-Yassuda, Yatiyo
dc.contributor.authorDe Fátima Lima De Assis, Maria
dc.contributor.authorKasahara, Sanae [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal do Pará (UFPA)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:53:20Z
dc.date.available2022-04-28T19:53:20Z
dc.date.issued1992-01-01
dc.description.abstractThe distribution of Ag-NORs was analyzed in 25 specimens of Akodon aff. arviculoides (2n = 24 and 25). NORs occurred on chromosome arms 2q, 3p, 6p, 7q and lOq, as identified by successive Ag- and G-band staining. In one specimen with 2n = 25, the supernumerary B chromosome presented Ag-NORs on both arms but in 3 other animals this chromosome was never stained. The number of Ag-NORs per cell ranged from 1 to 10 and the staining pattern was characteristic for each chromosome pair in an individual. No differences between tissues were observed in four animals investigated. © 1992 Taylor & Francis Group, LLC.en
dc.description.affiliationDepartamento de Biologia Instituto de Biociências USP, Caixa Postal 11461, São Paulo, 05499
dc.description.affiliationDepartamento de Genética UFPA, Belém, PA, 66000
dc.description.affiliationDepartamento de Biologia UNESP, Rio Claro, SP, 13500
dc.description.affiliationUnespDepartamento de Biologia UNESP, Rio Claro, SP, 13500
dc.format.extent163-174
dc.identifierhttp://dx.doi.org/10.1080/00087114.1992.10797220
dc.identifier.citationCaryologia, v. 45, n. 2, p. 163-174, 1992.
dc.identifier.doi10.1080/00087114.1992.10797220
dc.identifier.issn2165-5391
dc.identifier.issn0008-7114
dc.identifier.scopus2-s2.0-0001420976
dc.identifier.urihttp://hdl.handle.net/11449/223834
dc.language.isoeng
dc.relation.ispartofCaryologia
dc.sourceScopus
dc.titleVariability of the nucleolus organizer regions and the presence of the rDNA genes in the supernumerary chromosome of Akodon aff. arviculoides (Cricetidae, Rodentia)en
dc.typeArtigo

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