Search for dissertations about: "genetic structure"
Showing result 11 - 15 of 498 swedish dissertations containing the words genetic structure.
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11. Genetic variation and sexual reproduction in a moss with dwarf males, Homalothecium lutescens
Abstract : Dwarf males occur in many unrelated groups of organisms. Among land plants they are unique to mosses. Moss dwarf males originate from male spores that land and germinate on the female where their final size is restricted to a few mm. Fertilization in mosses occur over short distances with swimming spermatozoids. READ MORE
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12. Ecological drivers and genetic signatures of evolutionary divergence and local adaptation in pike (Esox lucius)
Abstract : The diversity among species, populations, and individuals in nature is astonishing. Genetic and phenotypic variation constitutes the raw material for evolution. It influences how populations respond to changing environments, and can impact long-term survival of species and ecosystem functioning. READ MORE
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13. Effects of Agriculture on Abundance, Genetic Diversity and Fitness in the Common Frog, Rana temporaria
Abstract : The aims of this thesis were to evaluate the effects of agriculture on amphibians in terms of (i) population genetic consequences of agriculture-induced spatial changes of the landscape and (ii) local adaptation and tolerance to frequently used agrochemicals. The study was performed using the common frog Rana temporaria as a model. READ MORE
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14. A Genetic Switch in Bacteriophages within the Peduovirinae Subfamily : Structure, Function and Evolution
Abstract : The temperate bacteriophages in the Peduovirinae subfamily can either grow lytically or integrate into their bacterial host and form lysogeny. Which one of the two life cycles the phage will enter after infection is controlled by a transcriptional switch. READ MORE
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15. Population genetic history and patterns of admixture : Examples from northeastern and southern Africa
Abstract : The origin of humans lies in Africa, as has been shown by archaeology, paleontology and genetics. Here, we can find the largest genetic diversity and the deepest split among human populations. African genetic diversity has been shaped by a long and complex history. READ MORE