Now showing items 21-30 of 252
Food Quality Effects On Life History Trait Correlations In Daphnia
Life history theory assumes that correlations among fitness-related life history traits should be negative among individuals, reflecting resource allocation constraints among traits such as growth and reproduction. These ...
Genetic Evidence for Differential Activities of Goa Isoforms in Drosophila Melanogaster
Mental illness is prevalent in our population and has been studied for decades but is still poorly understood. Understanding the genetic and biological mechanisms underlying these disorders can lead to significant improvements ...
From Genes to Genomes: Local Adaptation and Adaptive Potential in Two Arctic Seabirds
By investigating the mechanisms underlying the evolution and the maintenance of local adaptations we can help predict how species will adapt to future environmental change. In this thesis I investigate local adaptation and ...
Contact zone dynamics and the evolution of reproductive isolation in a North American treefrog, the spring peeper (Pseudacris crucifer)
Despite over seven decades of speciation research and 25 years of phylogeographic studies, a comprehensive understanding of mechanisms that generate biological species remains elusive. In temperate zones, the pervasiveness ...
Assessing Diatom Shifts in Embayments and Lakes in and Around Georgian Bay (Lake Huron) Using Paleolimnology
Freshwater ecosystems in Ontario are affected by a growing number of multiple stressors, with climate change often acting as a “threat multiplier”. Diatom-based paleolimnological approaches are used to provide the much ...
A comparative paleolimnological assessment of the influences of early Arctic population groups on freshwater ecosystems from southern Baffin Island, Nunavut
Recent paleolimnological research in the eastern Canadian high Arctic on the ecological impact of the Thule c.1000-1500 AD has documented the influence of prehistoric anthropogenic activities. Six lake and pond sites ...
The genomic consequences of sexual selection
Sex-differences in phenotype, development, and life-history can alter the strength of selection experienced by males and females. In particular, theoretical models have demonstrated that differences in the strength of ...
Does the goldfish COX4-1 gene promoter possess cold-responsive elements?
Mitochondrial biogenesis permits tissues to increase mitochondrial content in response to environmental and physiological stressors. In many species of fish mitochondrial biogenesis is triggered by cold exposure. The greater ...
Investigating the Effects of Increased ACT11 Expression on Sexual Reproduction and Trichome Branching in Arabidopsis
Activation-tagging is a powerful functional genomics technique used to identify plant genes and their functions. The random introduction of gene enhancers into the plant genome results in the overexpression of nearby genes, ...
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