Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"concerted evolution"”.
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Incomplete concerted evolution in the non-hybrid diploid Clematic fremontii S. Watston (Rananculaceae)
Clematis fremontii S. Wats. (Ranunculaceae) is a diploid perennial forb with strict habitat requirements that occurs in isolated populations in the cedar glades of Missouri and the mixed-grass prairies of Kansas and Nebraska. Based on geographical isolation and morphological differences, this …
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Evolutionary relationships in Oryza inferred from the gene that encodes the 10 kDa prolamin (seed storage protein) polypeptide
… and use this information in understanding the evolution of the Oryza genus. Our principle hypothesis is that genetic diversity exists at the molecular level in wild species of Oryza, and that this diversity can provide useful information regarding the phylogenetic relationships among rice …
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Molecular evolution of the RNA polymerase genes and the phylogeny of seed plants
This work is a union of molecular biology and evolutionary biology in addressing questions regarding the evolution of organisms and their genes. This project focuses on major groups of seed plants (angiosperms, and four gymnosperms groups: conifers, cycads, Ginkgo and Gnetales). These organisms …
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Evolutionary Dynamics of the Alpha-actinin Gene Family
… of a-actinin. I also investigated homogenizing evolution within the spectrin repeats of the gene family. This was accomplished using gene conversion analyses and a new analysis which implements a continuum of the two known modes of homogenizing evolution: birth-and-death evolution and concerted …
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A Systematic Review of the Viola palmata Species Complex in the Gulf Coastal Plain and Southern Appalachians
… likely due to the effects of hybridization, concerted evolution, and/or minimal variation among sequences. Analysis of microsatellite loci did show separation among individuals classified as <em>Viola palmata</em> and of other morphotypes. Measured soil and ecological characteristics showed …
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The evolution of immune genes in tsetse flies (Glossina) and insights into tsetse-symbiont-trypanosome interactions
… explored. In this thesis we aim to explore the evolution of three important immune genes: attacin-A (AttA), Defensin (Def) and Toll-like receptor 2 (TLR2), in relation to symbionts and parasitic interactions. This could in turn lay the foundations for genetic control methods The successful …
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Adaptive Evolution of Surface Proteins in Microbial Pathogens: Lyme Disease Pathogens (Borreliella sp.) and Human Immunodeficiency Virus Type 1 (HIV-1)
… comprises three chapters exploring the adaptive evolution of surface proteins in pathogens responsible for Lyme Disease and Acquired Immunodeficiency Syndrome (AIDS). The first chapter focused on antigenicity analysis of the VlsE protein in <em>Borreliella</em> bacteria. Conserved regions of VlsE …
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Collective Evolution of Biological and Physical Systems
In this dissertation, I study the evolution of solidification fronts propagating in undercooled liquids, the evolution of microbial communities through diversification fronts propagating along microbial genomes, the evolution of the universality and optimality of the genetic code, and the emergence …
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The ecology, life history, and phylogeny of the marine thecate heterotrophic dinoflagellates Protoperidinium and Diplopsalidaceae (Dinophyceae)
… expanded our understanding of the autecology and evolutionary history of the Protoperidinium and diplopsalids. The distributions of Protoperidinium species off the southwestern coast of Ireland were influenced by physical oceanographic conditions coupled with the availability of preferred prey. …