Search for dissertations about: "Z chromosome"
Showing result 16 - 20 of 24 swedish dissertations containing the words Z chromosome.
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16. Comparative Genomics in Birds
Abstract : To shed light on forces that shape the molecular evolution of bird genomes, and in turn avian adaptations, comparative analyses of avian DNA sequences are important. Moreover, contrasting findings in birds to those of other organisms will lend a clearer view on general aspects of molecular evolution. READ MORE
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17. Gene Mapping in Ficedula Flycatchers
Abstract : In order to get full understanding of how evolution proceeds in natural settings it is necessary to reveal the genetic basis of the phenotypic traits that play a role for individual fitness in different environments. There are a few possible approaches, most of which stem from traditional mapping efforts in domestic animals and other model species. READ MORE
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18. The Effects of Mutation and Selection on the Rate and Pattern of Molecular Evolution in Birds
Abstract : By comparing sequence diversity and divergence on sex chromosomes one can study how the rate of evolution in affected by mutation and/or selection. The rate of mutation in male biased, meaning that relatively more mutations are created in the male germ line than in the female. READ MORE
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19. Genomic and Peptidomic Characterization of the Developing Avian Brain
Abstract : Chicken and Japanese quail are commonly used models in developmental and sex specific neuroendocrine research. There is relatively little known about the mechanisms behind their sex specific brain development, especially regarding the impact of the sex chromosomes (male: ZZ, female ZW) in relation to gonadal hormones. READ MORE
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20. Molecular genetics and mechanisms of pigmentation and melanoma
Abstract : Ever since man domesticated the first wild animals several thousand years ago, many species have been living in close relationship with humans, being objects for our requests and wishes about any kind of phenotypic traits. As a result, we have by selective breeding created a fascinating spectrum of phenotypes within most species we have domesticated. READ MORE