Search for dissertations about: "Christopher Wheat"
Showing result 1 - 5 of 10 swedish dissertations containing the words Christopher Wheat.
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1. Exploring the role of gene duplications in plant-insect interactions
Abstract : As evolutionary biologists, we are often curious about the genomic origins of our favorite adaptations. Although some innovations certainly arose de novo, many more originated through the process of whole-gene or within-gene duplication. READ MORE
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2. Hopeful monsters: The role of hybrids in adaptation : The impact of hybridisation and genetic diversity on adaptation to stressful and novel environments
Abstract : Adaptation to novel environments can only occur if natural selection has the raw material to act upon. But small, endangered populations are often genetically depleted, and the acquisition of beneficial de novo mutations often takes too long when population face quick and extreme environmental change. READ MORE
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3. Life history evolution during a climate-driven butterfly range expansion
Abstract : Climate change pushes species polewards and upwards – as temperatures rise, species move to areas that were previously too cold for them. During range expansions, species encounter unfamiliar environmental conditions, which may require evolutionary adaptation, but expanding populations may often be hampered by their genetic and demographic properties. READ MORE
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4. Immunity & the butterfly : A functional genomic study of natural variation in immunity
Abstract : Butterflies are ubiquitous and abundant, occurring in a wide variety of environments that contain diverse microbial communities with varied pathogenic pressures. These pathogens and parasites present a constant threat to organisms, and have led to the evolution of complex and intricate immune responses. READ MORE
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5. Geographic variation in life cycles : Local adaptation and ecological genetics in a temperate butterfly
Abstract : Conditions in nature change with the seasons, necessitating seasonal adaptations that synchronize the life cycles of organisms with their surroundings. Such regulatory adaptations must vary between populations to track local variation in climate and seasonality; this local adaptation is facilitated by locally specific seasonal cues, but may be hampered by gene flow and genetic history. READ MORE
