Genetic Dissimilarity
Mostrando 49-60 de 71 artigos, teses e dissertações.
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49. Evaluation of genetic divergence among lines of laying hens using cluster analysis
Cluster analysis was used to investigate the genetic divergence among five lines of laying hens. The following traits were evaluated: body weight at 40, 48 and 56 weeks of age; egg weight at 40, 44, 52 and 60 weeks of age; and laying rate from 40 to 60 weeks of age. Three groups were formed when data were analyzed by the single-linkage hierarchical method us
Revista Brasileira de Ciência Avícola. Publicado em: 2005-06
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50. Avaliação da diversidade genética de populações de fáfia (Pfaffia glomerata (Spreng.) Pedersen) por RAPD, caracteres morfológicos e teor de beta-ecdisona / Genetic diversity of pfaffia populations (Pfaffia glomerata (Spreng.) Pedersen) by RAPD, morphological characters and ß-ecdisone contents
Pfaffia (Pfaffia glomerata (Spreng.) Pedersen) is a native species of South America with widespread occurrence in the States of Paraná, Mato Grosso do Sul and Goiás. Its economic value is mainly due to the similarity of their phytochemical characteristics to the Korean-ginseng (Panax ginseng). Research institutions are carrying out continual germplasm coll
Publicado em: 2005
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51. Genetic divergence in Tetragonisca angustula Latreille, 1811 (Hymenoptera, Meliponinae, Trigonini) based on rapd markers
One of the commonest neotropical stingless bees is Tetragonisca angustula (Latreille, 1811), popularly known in Portuguese as jataí, which occurs in variable nesting sites from Mexico to Argentina. We used 18 primers to generate 218 RAPD markers which we used to determined the genetic distance between T. angustula populations from 25 localities in three dif
Genetics and Molecular Biology. Publicado em: 2004
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52. Caracterização genética de populações de cupuaçuzeiro, Theobroma grandiflorum (Willd. ex. Spreng.) Schum., por marcadores microssatélites e descritores botânico-agronômicos. / Genetic characterization of cupuassu theobroma grandiflorum (willd. ex. spreng.) schum. populations by microsatellite markers and botanic-agronomic descriptors.
This work had the objectives to characterize and compare the genetic structure of seven populations of cupuassu, Theobroma grandiflorum (Willd. ex Spreng.) Schum., a fruit tree native to the Brazilian Amazon using microsatellite markers and botanic-agronomic descriptors; and to investigate the cupuassu mating system. The genetic structure of seven population
Publicado em: 2003
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53. Tecnicas de busca aplicadas a deteção de contornos
Edge detection is an important task in image processing. It plays a crucial role in object recognition and image understanding systems, what explains the great deal of research that has been dedicated to detect region edges in images obtained from different contexts. Nevertheless, the automatic edge detection is still a great challenge to today s technology.
Publicado em: 1997
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54. Genetic and functional differences between multipotent neural and pluripotent embryonic stem cells
Stem cells (SCs) are functionally defined by their abilities to self-renew and generate differentiated cells. Although much effort has been focused on defining the common characteristics among various types of SCs, the genetic and functional differences between multipotent and pluripotent SCs have garnered less attention. We report a direct genetic and funct
National Academy of Sciences.
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55. Genetic selection and DNA sequences of 4.5S RNA homologs.
A general strategy for cloning the functional homologs of an Escherichia coli gene was used to clone homologs of 4.5S RNA from other bacteria. The genes encoding these homologs were selected by their ability to complement a deletion of the gene for 4.5S RNA. DNA sequences of the regions encoding the homologs were determined. Since this approach does not requ
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56. Genetic dissimilarity of two fluconazole-resistant Candida albicans strains causing meningitis and oral candidiasis in the same AIDS patient.
We describe a patient with AIDS who simultaneously developed Candida meningitis with three positive cerebrospinal fluid cultures and oral candidiasis. This patient also had a history or recurrent episodes of oral candidiasis treated with fluconazole. The patient did not respond to this therapy but was cured with amphotericin B and flucytosine. In vitro susce
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57. Combined Ribotyping and Random Multiprimer DNA Analysis To Probe the Population Structure of Listeria monocytogenes
To improve our understanding of the genetic links between strains originating from food and strains responsible for human diseases, we studied the genetic diversity and population structure of 130 epidemiologically unrelated Listeria monocytogenes strains. Strains were isolated from different sources and ecosystems in which the bacterium is commonly found. W
American Society for Microbiology.
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58. Genetic dissimilarity of commensal strains of Candida spp. carried in different anatomical locations of the same healthy women.
Candida spp. carriage and strain relatedness were assessed in 52 healthy women at 17 anatomical locations by using an isolation procedure which assesses carriage intensity and by using a computer-assisted DNA fingerprinting system which computes genetic similarity between strains on the basis of the patterns of Southern blots probed with the moderately repet
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59. Bacillus anthracis Diversity in Kruger National Park
The Kruger National Park (KNP), South Africa, has a recorded history of periodic anthrax epidemics causing widespread disease among wild animals. Bacillus anthracis is the causative agent of anthrax, a disease primarily affecting ungulate herbivores. Worldwide there is little diversity among B. anthracis isolates, but examination of variable-number tandem re
American Society for Microbiology.
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60. Immunochemical comparison of phosphoribosylanthranilate isomerase-indoleglycerol phosphate synthetase among the Enterobacteriaceae.
The bifunctional enzyme of the tryptophan operon, phosphoribosylanthranilate isomerase-indoleglycerol phosphate synthetase (PRAI-InGPS;EC 4.1.1.48), was characterized by an immunochemical study of six representative members of the Enterobacteriaceae: Escherichia coli, Salmonella typhimurium, Enterobacter aerogenes, Serratia marcescens, Erwinia carotovora, an