Consulta: subjectFacets:"Karyotype diversity"
Registros recuperados: 2
Data/hora: 05/06/2024 05:25:11

Karyotypes of Brazilian non-volant small mammals (Didelphidae and Rodentia): An online tool for accessing the chromosomal diversity
Provedor de dados: 74
Autores: Paresque,Roberta; Rodrigues,Jocilene da Silva; Righetti,Kelli Beltrame.
Abstract We have created a database system named CIPEMAB (CItogenética dos PEquenos MAmíferos Brasileiros) to assemble images of the chromosomes of Brazilian small mammals (Rodents and Marsupials). It includes karyotype information, such as diploid number, karyotype features, idiograms, and sexual chromosomes characteristics. CIPEMAB facilitates quick sharing of information on chromosome research among cytogeneticists as well as researchers in other fields. The database contains more than 300 microscopic images, including karyotypic images obtained from 182 species of small mammals from the literature. Researchers can browse the contents of the database online (http://www.citogenetica.ufes.br). The system enables users to locate images of interest by taxa,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Karyotype diversity; Cytogenetic; Cytogenetic database.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400605

Microstructural chromosome reorganization in the genus Trichomycterus (Siluriformes: Trichomycteridae)
Provedor de dados: 83
Autores: Oliveira,Maria Lígia M. de; Utsunomia,Ricardo; Pansonato-Alves,José Carlos; Scacchetti,Priscilla C.; Primo,Cleberson C.; Vicari,Marcelo R.; Artoni,Roberto F.; Centofante,Liano; Moreira-Filho,Orlando; Oliveira,Claudio; Foresti,Fausto.
Trichomycterus is a specious fish genus within Trichomycterinae and displays remarkable karyotype diversity. However, knowledge about their genomic structure and location of repetitive sequence is still limited. In order to better understand the karyotype diversification, we analyzed nine species of Trichomycterus using classical and molecular cytogenetic techniques. Results revealed a conserved diploid chromosome number of 2n=54 chromosomes in all analyzed species, although remarkable differences on the constitutive heterochromatin distribution were observed. In addition, while the 18S rDNA showed a conserved distribution pattern, the 5S rDNA sites showed a quite diverse location considering the analyzed species. Remarkably, both ribosomal genes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Karyotype diversity; Repetitive DNA; RDNA; Supernumerary chromosomes.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200211