Search for dissertations about: "compensatory evolution"

Showing result 1 - 5 of 18 swedish dissertations containing the words compensatory evolution.

  1. 1. Biased Evolution Causes and Consequences

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Gerrit Brandis; Uppsala universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolution; Codon usage bias; Post-transcriptional regulation; Recombination; Inversion; EF-Tu; Frameshift suppression; Antibiotic resistance; Rifampicin; Ciprofloxacin; Compensatory evolution; Drug efflux; RNA polymerase; DNA gyrase; Mikrobiologi; Microbiology;

    Abstract : In evolution alternative genetic trajectories can potentially lead to similar phenotypic outcomes. However, certain trajectories are preferred over others. These preferences bias the genomes of living organisms and the underlying processes can be observed in ongoing evolution. READ MORE

  2. 2. Surviving the ratchet Modelling deleterious mutations in asexual populations

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jonas Söderberg; Uppsala universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Theoretical biology; Population genetics; Stochastic modelling; Genome evolution; Muller s Ratchet; NATURAL SCIENCES Biology Cell and molecular biology Genetics; NATURVETENSKAP Biologi Cell- och molekylärbiologi Genetik; NATURAL SCIENCES Biology Organism biology; NATURVETENSKAP Biologi Organismbiologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Abstract : One of the most unforgiving processes in nature is that of Muller's ratchet, a seemingly irreversible accumulation of deleterious mutations that all organisms have to deal with or face extinction. The most obvious way to avoid fitness collapse is recombination, though asexual populations usually do not have the luxury of recombining freely. READ MORE

  3. 3. Mechanisms of Adaptation to Deformylase Inhibitors

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Zorzet; Uppsala universitet.; [2010]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; antibiotic resistance; compensatory evolution; compensatory mutations; protein synthesis; initiation factor 2; initiator tRNA; formylation; peptide deformylase inhibitors; MEDICINE Microbiology; immunology; infectious diseases Microbiology Bacteriology; MEDICIN Mikrobiologi; immunologi; infektionssjukdomar Mikrobiologi Bakteriologi; Mikrobiologi; Microbiology; Biokemi; Biochemistry; Geography; Geografi;

    Abstract : Antibiotic resistance is a growing problem on a global scale. Increasing numbers of bacteria resistant toward one or multiple antibiotics could return us to the high mortality rates for infectious diseases of the pre-antibiotic era. READ MORE

  4. 4. Evolution of Antibiotic Resistance

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Franziska Pietsch; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ciprofloxacin; rifampicin; bacterial fitness; compensation; mutation rate; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : The emergence of antimicrobial resistance is a major global threat to modern medicine. The rapid dissemination of resistant pathogens and the associated loss of efficacy of many important drugs needs to be met with the development of new antibiotics and alternative treatment options. READ MORE

  5. 5. Development and Stability of Antibiotic Resistance

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Maria Sjölund; Uppsala universitet.; [2004]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Microbiology; antibiotic resistance; selection; mutation frequency; biological cost of resistance; compensatory evolution; Helicobacter pylori; normal microbiota; Mikrobiologi; MEDICINE Microbiology; immunology; infectious diseases; MEDICIN Mikrobiologi; immunologi; infektionssjukdomar;

    Abstract : Antibiotic resistance is of current concern. Bacteria have become increasingly resistant to commonly used antibiotics and we are facing a growing resistance problem. The present thesis was aimed at studying the impact of antibiotic treatment on pathogenic bacteria as well as on the normal human microbiota, with focus on resistance development. READ MORE