Search for dissertations about: "molekylär evolution"

Showing result 21 - 25 of 125 swedish dissertations containing the words molekylär evolution.

  2. 21. Stolen genes, a shortcut to success : Evolution of metabolic and detoxification capacities in Diplomonads

    Author : Alejandro Jimenez-Gonzalez; Jan Andersson; Thomas A. Richards; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Diplomonads; Parasitism; Evolutionary Genomics; Metabolism; Lateral Gene Transfer;

    Abstract : Parasites do not represent a single evolutionary lineage meaning that they have evolved several times. The changes that parasites have undergone to adapt to such a lifestyle are not entirely understood. READ MORE

  4. 22. Causes of Substitution Frequency Variation in Pathogenic Bacteria

    Author : Wagied Davids; Siv Andersson; Otto Berg; Bengt Persson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Comparative genomics; Molecular evolution; Bioinformatics; Human pathogens; Rickettsia; Helicobacter pylori; Biologi; Biology; Biologi;

    Abstract : Estimating substitution frequencies at sites that influence (Ka) and do not influence (Ks) the amino acid sequence is important for understanding the dynamics of molecular sequence evolution and the selective pressures that have shaped genetic variation. The aim of this work was to gain a deeper understanding of the driving forces of substitution frequency variation in human pathogens. READ MORE

  5. 23. Evolutionary Processes and Genome Dynamics in Host-Adapted Bacteria

    Author : Björn Nystedt; Siv Andersson; David Guttman; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular evolution; pathogen; secretion system; Bartonella; Buchnera; Blochmannia; Helicobacter; Bioinformatics; Bioinformatik; Evolutionary Genetics; evolutionär genetik;

    Abstract : Many bacteria live in close association with other organisms such as plants and animals, with important implications for both health and disease. This thesis investigates bacteria that are well adapted to live inside an animal host, and describes the molecular evolutionary processes underlying host-adaptation, based on bacterial genome comparisons. READ MORE

  6. 24. Genomic and transcriptomic investigation of reproductive incompatibility in Drosophila

    Author : Guilherme Costa Baião; Lisa Klasson; Alistair Darby; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wolbachia; Drosophila; Drosophila paulistorum; Differential Gene Expression; Reproductive Incompatibility; Reproductive Isolation; Comparative Genomics; Transcriptomics; RNA-Seq; Heteroplasmy; Mitochondria; Genomic conflict; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Abstract : Both nuclear and cytoplasmic elements can contribute to the emergence of reproductive incompatibilities that influence evolution and speciation. In the projects that compose this thesis, we use genomics and transcriptomics to study some of those elements in Drosophila. READ MORE

  7. 25. Comparative Genomics of Endosymbiotic Bacteria

    Author : Ivica Tamas; Paul Baumann; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; comparative genomics; endosymbiotic bacteria; Buchnera; reductive evolution; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Genomes of intracellular bacteria are thought to be the products of reductive evolution. They have evolved from ancestral genomes of free-living bacteria through a process of massive gene loss. READ MORE