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	Provedor de dados Genet. Mol. Biol. (2) Autor Morelli,Sandra (2) Campos,Carlos F. (1) Campos-Junior,Edimar O. de (1) Pereira,Boscolli B. (1) Sousa,Eduardo F. (1) Souto,Henrique N. (1) Torres-Mariano,Alessandra Ribeiro (1) Mais... Palavra-chave Astyanax eigenmanniorum (1) Biomonitoring (1) Characidae (1) Genotoxicity (1) Heterochromatin (1) Micronucleus (1) Nucleolus organizing regions (NORs) (1) Supernumerary chromosome (1) Tradescantia pallida (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2008 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última B chromosomes in a population of Astyanax eigenmanniorum (Characiformes, Characidae) from the Araguari River Basin (Uberlândia, MG, Brazil) Genet. Mol. Biol. Torres-Mariano,Alessandra Ribeiro; Morelli,Sandra. A cytogenetic study was conducted on an Astyanax eigenmanniorum population from the Caetano Stream (18° 44' 56" S/ 048° 18' 39" W) - in Uberlândia, MG, Brazil - showing a modal diploid number of 48 chromosomes in the standard male and female karyotypes. However, in several specimens it was also possible to observe metaphases with one or two B chromosomes, increasing the diploid number to 49 or 50 chromosomes, respectively. The supernumerary chromosomes were totally heterochromatic and highlighted after C-banding. The silver-stained nucleolus organizing regions (Ag-NORs) were located in at least five chromosomes of the standard karyotype, thus characterizing a multiple NOR system in the species. This is the first occurrence of an A. eigenmanniorum... Tipo: Info:eu-repo/semantics/article Palavras-chave: Characidae; Astyanax eigenmanniorum; Supernumerary chromosome; Heterochromatin; Nucleolus organizing regions (NORs). Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200015 Genotoxic evaluation of the River Paranaíba hydrographic basin in Monte Carmelo, MG, Brazil, by the Tradescantia micronucleus Genet. Mol. Biol. Campos,Carlos F.; Pereira,Boscolli B.; Campos-Junior,Edimar O. de; Sousa,Eduardo F.; Souto,Henrique N.; Morelli,Sandra. Abstract Pollutants have adverse effects on human health and on other organisms that inhabit or use water resources. The aim of the present study was to assess the environmental quality of three watercourses in Monte Carmelo, MG, Brazil, using the micronucleus test on Tradescantia. For each treatment, 15 plants were exposed to water samples for 24 h. The control group was exposed to formaldehyde (0.2%) and the negative control to Hoagland solution. Subsequently the plants were placed in Hoagland solution for 24 h to recover. Cells were stained with 2% acetic carmine and examined by light microscopy. Three hundred tetrads were analyzed per slide. The frequency of genotoxic alterations was expressed as the number of micronuclei per 100 tetrads, and the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomonitoring; Genotoxicity; Micronucleus; Tradescantia pallida. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400507 Registros recuperados: 2 Primeira ... 1 ... Última

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