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Provedor de dados: |
Anais da ABC (AABC)
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País: |
Brazil
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Título: |
Transmission rate variation among three B chromosome variants in the fish Prochilodus lineatus (Characiformes, Prochilodontidae)
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Autores: |
PENITENTE,MANOLO
VOLTOLIN,TATIANA A.
SENHORINI,JOSé A.
BORTOLOZZI,JEHUD
FORESTI,FAUSTO
PORTO-FORESTI,FáBIO
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Data: |
2013-01-01
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Ano: |
2013
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Palavras-chave: |
Supernumerary chromosomes
Controlled crosses
Curimbatá
Cytogenetic
Inheritance
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Resumo: |
Cytogenetic studies were developed in Prochilodus lineatus (Valenciennes 1836), describing an interesting system of small supernumerary chromosomes. The purpose of this work is to study the frequency and morphology of B chromosomes in individuals from the parental line and the inheritance patterns of these elements in individuals obtained from controlled crosses in the species P. lineatus. The transmission rate of B chromosomes revealed a kB=0.388 for the acrocentric type, a kB=0.507 for the metacentric type and a kB=0.526 for the submetacentric type. The obtained results raise hypothesis that B-acrocentric chromosomes are involved in an extinction process in this species, while the metacentric and submetacentric supernumerary elements comprises a neutral mechanism and follows a Mendelian transmission rate.
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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=S0001-37652013000401371
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Editor: |
Academia Brasileira de Ciências
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Relação: |
10.1590/0001-3765201387611
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Formato: |
text/html
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Fonte: |
Anais da Academia Brasileira de Ciências v.85 n.4 2013
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Direitos: |
info:eu-repo/semantics/openAccess
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