Comparative Chromosome Mapping of U2 snRNA and 5S rRNA Genes in Gymnotus Species (Gymnotiformes, Gymnotidae): Evolutionary Dynamics and Sex Chromosome Linkage in G. pantanal

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorUtsunomia, Ricardo
dc.creatorScacchetti, Priscilla C.
dc.creatorPansonato-Alves, Jose C.
dc.creatorOliveira, Claudio
dc.creatorForesti, Fausto
dc.date2015-03-18T15:55:39Z
dc.date2016-10-25T20:34:54Z
dc.date2015-03-18T15:55:39Z
dc.date2016-10-25T20:34:54Z
dc.date2014-01-01
dc.date.accessioned2017-04-06T07:15:35Z
dc.date.available2017-04-06T07:15:35Z
dc.identifierCytogenetic And Genome Research. Basel: Karger, v. 142, n. 4, p. 286-292, 2014.
dc.identifier1424-8581
dc.identifierhttp://hdl.handle.net/11449/117255
dc.identifierhttp://acervodigital.unesp.br/handle/11449/117255
dc.identifier10.1159/000362258
dc.identifierWOS:000339955800007
dc.identifierhttp://dx.doi.org/10.1159/000362258
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/927902
dc.descriptionA comparative mapping of U2 small nuclear RNA (snRNA) and 5S ribosomal RNA (rRNA) genes was performed in 6 Gymnotus species. All species analyzed presented the U2 snDNA organized in conspicuous blocks and not co-located with rRNA genes. In addition, 5 species showed the U2 snDNA located in a single pair of chromosomes, which seems to be a conserved trait in this genus. Conversely, G. pantanal was the only species displaying several terminal signals in different chromosome pairs, including the X 1 sex chromosome but not the Y chromosome. This is the first report of U2 snRNA genes in sex chromosomes of fishes. The absence of sites in the Y chromosome of G. pantanal indicates a possible loss of terminal segments of the chromosomes involved in the Y formation. (C) 2014 S. Karger AG, Basel
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherKarger
dc.relationCytogenetic And Genome Research
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectFISH
dc.subjectMolecular cytogenetics
dc.subjectMultigene family
dc.subjectSex chromosomes
dc.subjectTeleostei
dc.titleComparative Chromosome Mapping of U2 snRNA and 5S rRNA Genes in Gymnotus Species (Gymnotiformes, Gymnotidae): Evolutionary Dynamics and Sex Chromosome Linkage in G. pantanal
dc.typeOtro


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