Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Biocell (2) Autor Solari,A.J. (2) Bustos,Jimena (1) Merani,M.S. (1) Pigozzi,M.I. (1) Sciurano,R. B. (1) Sciurano,R.B. (1) Mais... Palavra-chave Chromosomal translocations (1) Crossovers (1) Human meiosis (1) Human meiotic recombination (1) MLH1 foci (1) Meiosis (1) Synaptonemal complexes (1) XY chromosomes (1) Xenarthra (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2006 (1) 2005 (1) País Argentina (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Synaptonemal complexes and XY behavior in two species of argentinian armadillos: Chaetophractus villosus and Dasypus hybridus (Xenarthra, Dasypodidae) Biocell Sciurano,R. B.; Merani,M.S.; Bustos,Jimena; Solari,A.J.. Spermatocytes from the two armadillo species, C. villosus and D. hybridus were studied in microspreads for synaptonemal complexes (SCs) and in thin sections for electron microscopy (EM). The complete SC karyotype generally agrees with previous reports on mitotic chromosomes, except for the sex chromosomes. The X chromosome is submetacentric in both species and the Y is the shortest one in C. villosus and the second shortest in D. hybridus, and an extremely acrocentric one. A SC is formed along the total length of the Y chromosome, and this SC persists along all the pachytene substages. A single ecombination nodule (RN) is located in the region of the SC nearest to the attachment to the nuclear envelope. The lateral element (LE) of the X axis in the SC... Tipo: Info:eu-repo/semantics/article Palavras-chave: Xenarthra; XY chromosomes; Meiosis; Synaptonemal complexes. Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100009 Changes in crossover distribution along a quadrivalent in a man carrier of a reciprocal translocation t(11;14) Biocell Pigozzi,M.I.; Sciurano,R.B.; Solari,A.J.. A testicular biopsy from an infertile man carrying a heterozygous chromosome translocation t(11;14) was studied with synaptonemal complex analysis and immunolocalization of the protein MLH1 for crossover detection. A full blockage of spermatogenesis at the spermatocyte stage was related to the presence of the translocation quadrivalents at pachytene. Only 2% of the quadrivalents showed full synapsis. Most of the spermatocytes showed asynaptic free ends that frequently mingled with the XY pair. The average number of crossovers per cell was diminished from a mean of 52.7 in controls to a mean of 48 in the patient. The difference between the number of crossovers in the quadrivalent and the normal bivalents was highly significant. The distribution of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Human meiotic recombination; Human meiosis; Crossovers; MLH1 foci; Chromosomal translocations. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000200007 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco