Variation Genetics
Mostrando 1-12 de 251 artigos, teses e dissertações.
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1. Albinism: epidemiology, genetics, cutaneous characterization, psychosocial factors
Abstract Oculocutaneous albinism is an autosomal recessive disease caused by the complete absence or decrease of melanin biosynthesis in melanocytes. Due to the reduction or absence of melanin, albinos are highly susceptible to the harmful effects of ultraviolet radiation and are at increased risk of actinic damage and skin cancer. In Brazil, as in other par
An. Bras. Dermatol.. Publicado em: 09/12/2019
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2. “A most bountiful source of inspiration:” Dobzhansky’s evolution of tropical populations, and the science and politics of genetic variation
Resumo Theodosius Dobzhansky tem sido estudado pelo modo como ele integrou o naturalismo de campo e a experimentação científica, que deram origem à síntese moderna, assim como a alavanca que ele deu ao conhecimento biológico para apoiar valores liberais e cosmopolitas em meio à Segunda Guerra Mundial e à Guerra Fria. Além disso, Dobzhansky tem sido
Hist. cienc. saude-Manguinhos. Publicado em: 2019-03
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3. Cross-genera SSR transferability in cacti revealed by a case study using Cereus (Cereeae, Cactaceae)
Abstract The study of transferability of simple sequence repeats (SSR) among closely related species is a well-known strategy in population genetics, however transferability among distinct genera is less common. We tested cross-genera SSR amplification in the family Cactaceae using a total of 20 heterologous primers previously developed for the genera Arioca
Genet. Mol. Biol.. Publicado em: 21/02/2019
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4. Gene variation and genetic differentiation among populations of the solitary mud dauber wasp Trypoxylon (Trypargilum) albitarse Fabricius 1804 (Hymenoptera, Crabronidae)
Abstract Trypoxylon is a genus of solitary crabronid wasps whose population genetics is poorly known. The purpose of the present study was to investigate the genetic variation and differentiation among five populations of Trypoxylon albitarse, a species widely distributed throughout the Neotropics, with records from Panama to northern Argentina. Eight specie
Genet. Mol. Biol.. Publicado em: 24/11/2015
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5. Chromosomal localization of microsatellite loci in Drosophila mediopunctata
Drosophila mediopunctata has been used as a model organism for genetics and evolutionary studies in the last three decades. A linkage map with 48 microsatellite loci recently published for this species showed five syntenic groups, which had their homology determined to Drosophila melanogaster chromosomes. Then, by inference, each of the groups was associated
Genet. Mol. Biol.. Publicado em: 2015-03
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6. Exon-primed intron-crossing (EPIC) markers as a tool for ant phylogeography
Exon-primed intron-crossing (EPIC) markers as a tool for ant phylogeography. Due to their local abundance, diversity of adaptations and worldwide distribution, ants are a classic example of adaptive radiation. Despite this evolutionary and ecological importance, phylogeographical studies on ants have relied largely on mitochondrial markers. In this study we
Rev. Bras. entomol.. Publicado em: 13/12/2013
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7. History of domestication and spread of Aedes aegypti - A Review
The adaptation of insect vectors of human diseases to breed in human habitats (domestication) is one of the most important phenomena in medical entomology. Considerable data are available on the vector mosquito Aedes aegypti in this regard and here we integrate the available information including genetics, behaviour, morphology, ecology and biogeography of t
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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8. Mantel test in population genetics
The comparison of genetic divergence or genetic distances, estimated by pairwise F ST and related statistics, with geographical distances by Mantel test is one of the most popular approaches to evaluate spatial processes driving population structure. There have been, however, recent criticisms and discussions on the statistical performance of the Mantel test
Genet. Mol. Biol.. Publicado em: 2013
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9. Análise da variação molecular de Poecilia vivipara (Cypronodontiformes: Poecillidea) / Analysis of molecular variation of Poecilia vivipara (Cypronodontiformes: Poecillidea)
Os poecilídeos são um excelente sistema modelo para estudos de evolução de história de vida seleção natural e sexual, evolução e coevolução experimental e evolução fenotípica em gradientes ecológicos. Os poecilídeos são também excelentes modelos para o estudo de processos ecológicos e evolutivos associados como a invasão e colonização d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/07/2012
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10. Polimorfismo de variação de número de cópias do gene PDLIM3 como candidato para associação com o desempenho esportivo: um estudo exploratório de associação / Copy number variation polymorphism in gene PDLIM3 as a candidate for association with athlete status: an exploratory association study
O presente estudo teve como objetivo avaliar a associação do polimorfismo de variação do número de cópias (CNV) do gene PDLIM3 (ALP) com o desempenho esportivo. Também foi objetivo desta investigação avaliar o impacto dessa variação genética sobre o padrão de expressão da proteína PDLIM3 no músculo esquelético. Mil e setenta e quatro indiví
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/05/2012
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11. Population genetic structure of Sisyrinchium micranthum Cav. (Iridaceae) in Itapuã State Park, Southern Brazil
Sisyrinchium micranthum Cav. is a member of the family Iridaceae, which is distributed over the American continent. In Brazil, this species is found, not only in disturbed areas and coastal regions, but is also very common in urban centers, such as public parks, during the spring. Chromosome counts for North American specimens are 2n = 32 and 2n = 48, wherea
Genetics and Molecular Biology. Publicado em: 02/02/2012
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12. Genetics, evolution and conservation of Bromeliaceae
Bromeliaceae is a morphologically distinctive and ecologically diverse family originating in the New World. Three centers of diversity, 58 genera, and about 3,140 bromeliad species are currently recognized. We compiled all of the studies related to the reproductive biology, genetic diversity, and population structure of the Bromeliaceae, and discuss the evol
Genet. Mol. Biol.. Publicado em: 2012