| Registro completo |
| Provedor de dados: |
Genet. Mol. Biol.
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| País: |
Brazil
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| Título: |
B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
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| Autores: |
Medeiros,Lilian R.
Rossa-Feres,Denise C.
Jim,Jorge
Recco-Pimentel,Shirlei M.
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| Data: |
2006-01-01
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| Ano: |
2006
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| Palavras-chave: |
Anura
B-chromosome cytogenetics Dendropsophus supernumerary chromosome
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| Resumo: |
We report on the presence of B-chromosomes in two populations of Dendropsophus nanus (= Hyla nana Boulenger, 1889) from São Paulo State, Brazil. Such chromosomes were observed in 4 out of 43 specimens (9.3%) and in 9 out of 15 specimens (60%) from the municipalities of Nova Aliança and Botucatu, respectively. The karyotype 2n = 30 + 1B found in D. nanus was similar to that of other species with 2n = 30 chromosomes, except for the presence of an additional small telocentric chromosome. In one specimen from Botucatu, cells with one to three extra chromosomes were observed. These B-chromosomes appeared as univalent in meiosis I and did not bear a nucleolar organizer region or exhibit constitutive heterochromatin.
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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=S1415-47572006000200010
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| Editor: |
Sociedade Brasileira de Genética
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| Relação: |
10.1590/S1415-47572006000200010
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| Formato: |
text/html
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| Fonte: |
Genetics and Molecular Biology v.29 n.2 2006
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| Direitos: |
info:eu-repo/semantics/openAccess
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