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dc.contributor.authorUtsunomia, Ricardo-
dc.contributor.authorScacchetti, Priscilla C.-
dc.contributor.authorPansonato-Alves, Jose C.-
dc.contributor.authorOliveira, Claudio-
dc.contributor.authorForesti, Fausto-
dc.identifier.citationCytogenetic And Genome Research. Basel: Karger, v. 142, n. 4, p. 286-292, 2014.-
dc.description.abstractA 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, Baselen
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.sourceWeb of Science-
dc.subjectMolecular cytogeneticsen
dc.subjectMultigene familyen
dc.subjectSex chromosomesen
dc.titleComparative Chromosome Mapping of U2 snRNA and 5S rRNA Genes in Gymnotus Species (Gymnotiformes, Gymnotidae): Evolutionary Dynamics and Sex Chromosome Linkage in G. pantanalen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Morfol, BR-18618970 Botucatu, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Morfol, BR-18618970 Botucatu, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofCytogenetic And Genome Research-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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