Evolution Biology
Mostrando 13-24 de 246 artigos, teses e dissertações.
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13. Evo-devo of non-bilaterian animals
The non-bilaterian animals comprise organisms in the phyla Porifera, Cnidaria, Ctenophora and Placozoa. These early-diverging phyla are pivotal to understanding the evolution of bilaterian animals. After the exponential increase in research in evolutionary development (evo-devo) in the last two decades, these organisms are again in the spotlight of evolution
Genet. Mol. Biol.. Publicado em: 21/08/2015
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14. Seed vigor testing: an overview of the past, present and future perspective
The assessment of seed vigor has many important implications to the seed industry as a basic monitoring of seed physiological potential during different phases of seed production and a support for strategic decisions regarding the selection of high quality seedlots to meet the consumer demand. The potential attributes of seed vigor as a fundamental physiolog
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-08
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15. Obstáculos para el aprendizaje del modelo de evolución por selección natural, en estudiantes de escuela secundaria de Argentina*
In this work we present the results of research which intended to identify the principal obstacles for the learning of the model of evolution by natural selection in students belonging to two courses in secondary school. The existence of obstacles is deduced from the identification and characterization of the explicative patterns and the conceptions that the
Ciênc. educ. (Bauru). Publicado em: 2015-03
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16. Bats and zoonotic viruses: can we confidently link bats with emerging deadly viruses?
An increasingly asked question is 'can we confidently link bats with emerging viruses?'. No, or not yet, is the qualified answer based on the evidence available. Although more than 200 viruses - some of them deadly zoonotic viruses - have been isolated from or otherwise detected in bats, the supposed connections between bats, bat viruses and human diseases h
Mem. Inst. Oswaldo Cruz. Publicado em: 2015-02
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17. Human molecular cytogenetics: from cells to nucleotides
The field of cytogenetics has focused on studying the number, structure, function and origin of chromosomal abnormalities and the evolution of chromosomes. The development of fluorescent molecules that either directly or via an intermediate molecule bind to DNA has led to the development of fluorescent in situ hybridization (FISH), a technology linking cytog
Genet. Mol. Biol.. Publicado em: 2014
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18. ¿Nada en biología tiene sentidosi no es a la luz de la evolución?
We criticize the relevance of Dobzhansky's famous phrase "Nothing in biology makes sense except in the light of evolution", which we call the Central Dogma of the Evolutionary Synthesis (DCSE by its initials in Spanish). The first section explains the origin of DCSE and takes up the main points of the article in which Dobzhansky proposed it. The second secti
Ciênc. educ. (Bauru). Publicado em: 2013
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19. Behavioural biology of Chagas disease vectors
Many arthropod species have adopted vertebrate blood as their main food source. Blood is rich in nutrients and, except for the presence of parasites, sterile. However, this food source is not freely available, nor is obtaining it devoid of risk. It circulates inside vessels hidden underneath the skin of mobile hosts that are able to defend themselves and eve
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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20. Modelos de evolução : uma abordagem através de espaços de fenótipos / Models in evolution : a phenotypic space approach
Neste trabalho apresentamos modelos matemáticos de processos evolutivos, utilizando como abordagem principal a descrição da frequência de fenótipos em populações. São propostos diversos modelos baseados em equações diferenciais parciais, ordinárias e equações de recorrência. São apresentados resultados de suas análises, bem como comparações
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2012
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21. Genoma comparison problems / Problemas de comparação de genomas
Esta tese aborda três aspectos da comparação entre genomas: primeiro, eventos de transposição; segundo, eventos de reversão e de reversão quase-simétrica; terceiro, estudo da distância entre genomas sem ligação com algum tipo específico de rearranjo. O estudo do primeiro aspecto, eventos de transposição, permitiu a criação de um novo algoritm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012
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22. Children of time: the extended synthesis and major metaphors of evolution
It is time for an expansion and enrichment of evolutionary theory. The "back to the future" proposal contained herein is based on three postulates: 1) Neo-Darwinism is too impoverished for this task; 2) its predecessor, Darwinism, contained the necessary breadth of vision and metaphor to be the basis for an inclusive and unifying theory of biology; and 3) th
Zoologia (Curitiba). Publicado em: 2012-12
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23. 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
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24. Desenvolvimento placentário em quatis: evolução filogenética em carnívoros? / Placental development in quati: phylogenetic evolution in carnivores?
The importance of preservation of brazilian wild species is based on knowledge of their distribution, behavior in the wild and in captivity, and the detailed description of their reproductive biology in order to perpetuate the specie. One of the main impacts of this study is the scientific details of the uterine environment versus the process of placentation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011