Chromosome Duplication
Mostrando 1-12 de 545 artigos, teses e dissertações.
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1. [PROVISIONAL] Non-mosaic partial duplication 12p in a patient with dysmorphic characteristics and developmental delay
Abstract Duplication of the short arm of chromosome 12 is a rare chromosomal abnormality that may arise de novo or result from malsegregation of a balanced parental translocation. This study comprises the clinical description, cytogenetic and cytogenomic analyses and genotype-phenotype correlation in a patient with facial dysmorphism, developmental delay and
Genet. Mol. Biol.. Publicado em: 19/08/2019
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2. Haploid identification using tropicalized haploid inducer progenies in maize
Abstract The aim of this study was to identify maize haploid plants and compare the efficiency of identification of maize haploid plants using the R1-nj morphological marker, plant vigor, flow cytometry, chromosome counting, and microsatellite molecular markers under tropical conditions. We also established a protocol for chromosome duplication in maize hapl
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-03
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3. Cytoembryological evaluation, meiotic behavior and pollen viability of Paspalum notatum tetraploidized plants
Abstract This study evaluated the mode of reproduction, the meiotic behavior and the pollen viability of three tetraploid plants (2n=4x=40) originated from somatic chromosome duplication of Paspalum notatum plants. The plant WKS 3 changed the mode of reproduction after duplication and became apomictic. The plants WKS 63 and WKS 92 confirmed sexual mode of re
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-12
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4. Tetraploidization in citrus rootstocks: effect of genetic constitution and environment in chromosome duplication
Abstract The objective of this study was to identify polyploid plants from citrus rootstocks and to evaluate the influence of the genetic constitution and of the environment on the frequency of chromosome duplication. Populations obtained from rootstock seeds of Trifoliata [Poncirus trifoliate (L.) Raf], citrumelo 'Swingle' [C. paradise Macf. × P. trifoliat
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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5. The complex translocation (9;14;14) involving IGH and CEBPE genes suggests a new subgroup in B-lineage acute lymphoblastic leukemia
Abstract Many subtypes of acute lymphoblastic leukemia (ALL) are associated with specific chromosomal rearrangements. The complex translocation t(9;14;14), a variant of the translocation (14;14)(q11;q32), is a rare but recurrent chromosomal abnormality involving the immunoglobulin heavy-chain (IGH) and CCAAT enhancer-binding protein (CEBPE) genes in B-lineag
Genet. Mol. Biol.. Publicado em: 2016-03
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6. Karyotypic evolution of ribosomal sites in buffalo subspecies and their crossbreed
Domestic buffaloes are divided into two group based on cytogenetic characteristics and habitats: the "river buffaloes" with 2n = 50 and the "swamp buffaloes", 2n = 48. Nevertheless, their hybrids are viable, fertile and identified by a 2n = 49. In order to have a better characterization of these different cytotypes of buffaloes, and considering that NOR-bear
Genet. Mol. Biol.. Publicado em: 2014-06
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7. Cytogenetic comparison of Podocnemis expansa and Podocnemis unifilis: a case of inversion and duplication involving constitutive heterochromatin
Podocnemis expansa and P. unifilis present 2n = 28 chromosomes, a diploid number similar to those observed in other species of the genus. The aim of this study was to characterize these two species using conventional staining and differential CBG-, GTG and Ag-NOR banding. We analyzed specimens of P. expansa and P. unifilis from the state of Tocantins (Brazil
Genet. Mol. Biol.. Publicado em: 19/07/2013
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8. Investigação de alterações na região 22q11 em indivíduos com fissura de palato / Investigation of the alterations in the region 22q11 in individuals with cleft palate
Purpose: To investigate alterations (deletions/duplications) in the 22q11 region in individuals with cleft palate aged 0-2 years, in order to perform early diagnosis of 22q11 deletion syndrome (SD22q11). Local: Genetics and Human Cytogenetics Laboratory, HRAC/USP, Bauru-SP. Methods: We selected 55 individuals with cleft palate, both genders, registered and i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/12/2011
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9. Cytological characterization of an Aspergillus nidulans mutant from a strain with chromosomic duplication
A development mutant, named V103, was obtained spontaneously from the A strain of A. nidulans. The A strain contains a duplicated segment of chromosome I that has undergone translocation to chromosome II (I → II). It is mitotically unstable and generates phenotypically deteriorated types, some with enhanced stability. The deteriorated variants of A. nidula
Brazilian Journal of Microbiology. Publicado em: 2010-03
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10. Caracterização do espectro fenotípico de pacientes com fissuras labiopalatinas associadas a múltiplas anomalias congênitas e alterações cromossômicas estruturais / Characterization of phenotypic spectrum in patients with cleft lip and palate associated with multiple congenital anomalies and structural chromosome abnormalities
Objective: Characterization of syndromes presented by patients with cleft lip and palate (CL/P) associated with associated with multiple congenital anomalies (MMC) and chromosomal abnormalities and expansion of the phenotyipc spectrum of syndromes already described. Setting: Human Cytogenetics Laboratory and Clinical Genetics Service, HRAC-USP, Bauru-SP. Par
Publicado em: 2009
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11. Estudos evolutivos em Myrtaceae : aspectos citotaxonomicos e filogeneticos em Myrteae, enfatizando Psidium e generos relacionados
Myrtaceae is one of the most diverse families in Neotropical region; principally belong to Mata Atlântica and Cerrado, reaching 10 to 15% of biodiversity of these biomes. Myrteae is the most generically tribe (73 genera and 2375 species) in this family. Generally, South-American taxa are considered a complex group and biosystematic studies are necessary to
Publicado em: 2009
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12. Efeitos citotoxicos e genotoxicos no meristema radicular de Allium cepa exposta a agua do Rio Paraiba do Sul - estado de São Paulo - regiões de Tremembe e Aparecida / Citotoxic and genotoxic effects in the root meristem of Allium cepa exposed to the water of the Paraiba do Sul river - São Paulo state - regions of Tremembe and Aparecida
One of the main sources of pollution of fresh water ecosystems refers to the discharge of industrial and urban wastes. Untreated sewage is considered an important cause to the deterioration of water quality in developing countries. Environmental pollutants have caused a decrease in water quality, inducing harmful effects in organisms which are in direct or i
Publicado em: 2009