Registro completo |
Provedor de dados: |
Genet. Mol. Biol.
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País: |
Brazil
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Título: |
Multiple interstitial ribosomal sites (NORs) in the Brazilian squirrel Sciurus aestuans ingrami (Rodentia, Sciuridae) with 2n = 40: an overview of Sciurus cytogenetics
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Autores: |
Fagundes,Valéria
Christoff,Alexandre Uarth
Amaro-Ghilard,Renata Cecília
Scheibler,Daniel R.
Yonenaga-Yassuda,Yatiyo
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Data: |
2003-01-01
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Ano: |
2003
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Palavras-chave: |
Squirrels
Chromosomes
Karyotype
NORs
Rodentia
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Resumo: |
This is the first time the karyotype of the Brazilian squirrel Sciurusaestuans ingrami, with 2n = 40, is described. The karyotype of this species comprises 18 pairs of biarmed and one minute pair of acrocentric autosomes, a medium-sized submetacentric X and a medium-sized acrocentric Y. Four pairs have an interstitial secondary constriction, co-located with nucleolar organizer regions (NORs), identified by silver-staining technique and fluorescent in situ hybridization (FISH) with ribosomal 18S/28S probes. The occurrence of multiple interstitial NORs is rare in rodents, and this is one of the few examples, identified by a molecular cytogenetics approach.
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Tipo: |
Info:eu-repo/semantics/article
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Idioma: |
Inglês
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Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000300007
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Editor: |
Sociedade Brasileira de Genética
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Relação: |
10.1590/S1415-47572003000300007
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Formato: |
text/html
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Fonte: |
Genetics and Molecular Biology v.26 n.3 2003
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Direitos: |
info:eu-repo/semantics/openAccess
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