A ZZ/ZW sex chromosome system in Imparfinis mirini (Pisces, Siluriformes)

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorCâmpus de Botucatu-
Autor(es): dc.creatorVissotto, P. C.-
Autor(es): dc.creatorForesti, F.-
Autor(es): dc.creatorOliveira, C.-
Data de aceite: dc.date.accessioned2025-08-21T18:56:37Z-
Data de disponibilização: dc.date.available2025-08-21T18:56:37Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued1997-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1508/cytologia.62.61-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230897-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230897-
Descrição: dc.descriptionThe cytogenetic analysis of 21 specimens of Imparfinis mirini showed the presence of 2n = 58 chromosomes in animals of both sexes. The basic karyotype consists of 22 metacentric and 34 submetacentric chromosomes plus one homomorphic pair (M/M) in males and one heteromorphic pair (M/SM) in females. Ag-NORs were located interstitially on the long arms of the largest metacentric pair and differences were frequently found concerning NOR size in the homologues. I. mirini presents a relatively large quantity of constitutive heterochromatin located in pericentromeric, interstitial and telomeric positions in several chromosome pairs. The occurrence of a heteromorphic chromosome pair in females was demonstrable by the presence of one extra C-banded segment added to the long arm of the W chromosome. The occurrence of detectable heteromorphism involving the sex chromosomes among fishes is discussed.-
Descrição: dc.descriptionDepartamento de Morfologia Institute de Biociências Câmpus de Botucatu, 18618-000, Botucatu, SP-
Formato: dc.format61-66-
Idioma: dc.languageen-
Relação: dc.relationCytologia-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFish cytogenetics-
Palavras-chave: dc.subjectImparfinis-
Palavras-chave: dc.subjectSex chromosomes-
Palavras-chave: dc.subjectZZ/ZW-
Título: dc.titleA ZZ/ZW sex chromosome system in Imparfinis mirini (Pisces, Siluriformes)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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