Sökning: "evolutionär genetik"
Visar resultat 6 - 10 av 66 avhandlingar innehållade orden evolutionär genetik.
6. The balance between sex and asex: evolutionary genetic studies of reproductive variation in Allium vineale
Sammanfattning : Evolutionary theory predicts a disadvantage to sexual reproduction. This manifests itself either by the higher growth rate of asexual females in a dioecious species, or by the higher transmission rate of a gene conferring asexual female function to its carriers in a hermaphrodite species. LÄS MER
7. Molecular population genetics of inducible defense genes in Populus tremula
Sammanfattning : Plant-herbivore interactions are among the most common of ecological interactions. It is therefore not surprising that plants have evolved multiple mechanisms to defend themselves, using both constitutive chemical and physical barriers and by induced responses which are only expressed after herbivory has occurred. LÄS MER
8. Neurospora tetrasperma from Natural Populations : Toward the Population Genomics of a Model Fungus
Sammanfattning : The study of DNA sequence variation is a powerful approach to study genome evolution, and to reconstruct evolutionary histories of species. In this thesis, I have studied genetic variation in the fungus Neurospora tetrasperma and other closely related Neurospora species. I have focused on N. LÄS MER
9. Reconstructing the Human Past using Ancient and Modern Genomes
Sammanfattning : The study of DNA variation is one of the most promising avenues for learning about the evolutionary and historical past of humans and other species. However, the difficulty associated with obtaining DNA directly from ancient remains have for long kept genomic studies of population history trapped in time; confined to interpreting patterns of modern-day variation without direct historical observations. LÄS MER
10. Meiotic Recombination in Human and Dog : Targets, Consequences and Implications for Genome Evolution
Sammanfattning : Understanding the mechanism of recombination has important implications for genome evolution and genomic variability. The work presented in this thesis studies the properties of recombination by investigating the effects it has on genome evolution in humans and dogs. LÄS MER