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 6 of 6 for “"phenotypic effect"”.
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Mechanisms and impact of alternative transposition-induced segmental duplications
… We also found a significant dosage-dependent effect of a 14.6 Mb duplication on phenotypic variation, and expression of mRNA and small RNA transcripts. This work expands our current knowledge of how DNA transposons contribute to rapid genome expansion, extends our understanding of the …
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Prevalence of the gene lsr2 among the genus Mycobacterium and an investigation into changes in biofilm formation when inactivating lsr2 regulated genes in Mycobacterium smegmatis
… biofilm formation. This study investigates the phenotypic effect on colony morphology and biofilm formation when Lsr2-regulated genes are inactivated. A mutant strain of M. smegmatis with defective lsr2 (M. smegmatis Δlsr2) was used as a parent strain for the study and the gene for mycocerosic …
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Modelling evolution of genome size in prokaryotes in response to changes in their abiotic environment
… reproduction, so the number of genes and their phenotypic effect (height and position of the Gaussian envelope) are free to evolve. The surface under the curve is fixed to prevent ‘supergenes’ from occurring. Change of the environmental conditions is simulated as a bounded random walk with a …
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The identification and characterisation of key genes involved in somatic embryogenesis in wheat (Triticum, aestivum L.)
… novel genes was shown to have an observable phenotypic effect on the development of somatic embryos and regeneration in wheat. Of particular interest is a wheat gene related to the rice embryo specific protein OSE 731, which appears to play an essential role in the transition of somatic …
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Evolutionary influences on the reduction in enzootic circulation and human incidence of western equine encephalitis
… I also found that these mutations have a phenotypic effect on WEEV’s enzootic hosts. Using competitive fitness assays, contemporary mutations have a competitive advantage in Culex tarsalis and possibly house sparrows. Additionally, these mutations have no effect on virulence in the Syrian …
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Evaluation of feedlot feed efficiency relationships as well as genetic and phenotypic performance, carcass, and economic outcomes
… dissertation was to investigate: 1) heterosis effects on feed efficiency, 2) how measures of feed efficiency affect one another, 3) heritability estimates, 4) genetic and phenotypic relationships of performance, carcass, economic, and feed efficiency traits and 5) the relationship of economic …