Sökning: "gene tree"

Visar resultat 6 - 10 av 132 avhandlingar innehållade orden gene tree.

  1. 6. Expanding the Chlamydiae tree : Insights into genome diversity and evolution

    Författare :Jennah E. Dharamshi; Thijs J. G. Ettema; Alexander Probst; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; PVC superphylum; Chlamydiae; chlamydia; intracellular; symbiosis; endosymbiont; pathogen; marine sediment; sponge microbiome; metagenomics; uncultured microbial diversity; phylogenomics; microbial evolution; eukaryote evolution; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Sammanfattning : Chlamydiae is a phylum of obligate intracellular bacteria. They have a conserved lifecycle and infect eukaryotic hosts, ranging from animals to amoeba. Chlamydiae includes pathogens, and is well-studied from a medical perspective. LÄS MER

  3. 7. Evolution of protein and non-coding RNA genes studied with comparative genomics

    Författare :Marcela Davila Lopez; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bioinformatics; evolution; non-coding RNA; gene prediction; gene order; bidirectional promoter; homologue prediction; secondary structure; RNAse P; RNase MRP;

    Sammanfattning : The identification of protein and non-coding RNA (ncRNA) genes is one important step in the analysis of a genome. This thesis focuses on the identification and analysis of proteins and ncRNAs homologues by exploiting a variety of computational methods in order to reach conclusions as to their structure, function, evolution and regulation. LÄS MER

  4. 8. Inferring evolution in bacteria using Markov chains and genomic signatures

    Författare :Daniel Dalevi; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Prediction suffix tree; Markov chains; Molecular evolution; Bioinformatics; Gene order rearrangements; Horizontal gene transfer; Variable length Markov chains;

    Sammanfattning : This thesis concerns the development of methods and models in evolutionary molecular biology. The techniques are also applicable to other similar biological problems. The first contribution is a novel classifier using fixed and variable length Markov chains that can discriminate between bacterial DNA of different species. LÄS MER

  5. 9. Tracing selection and adaptation along an environmental gradient in Populus tremula

    Författare :David Hall; Pär Ingvarsson; Thomas Bataillon; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Local adaptation; Selection; genetic differentiation; QST; FST; Association study; frequency spectra; recurrent hitchhiking; selective sweep; Tree; Populus; natural selection; quantitative genetics; Terrestrial ecology; Terrestrisk ekologi; Population Biology; populationsbiologi; genetik; Genetics;

    Sammanfattning : The distribution of the expressed genotype is moved around in the population over time byevolution. Natural selection is one of the forces that act on the phenotype to change the patterns ofnucleotide variation underlying those distributions. LÄS MER

  7. 10. Embracing the data flood : integrating diverse data to improve phenotype association discovery in forest trees

    Författare :Bastian Schiffthaler; Nathaniel Street; Martin Rosvall; Nicolas Delhomme; Marek Mutwil; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systems Biology; Association Discovery; Genomics; Transcriptomics; Genome Assembly; Gene Networks; Forest Tree; Aspen; Spruce; biology; biologi;

    Sammanfattning : Complex traits represent valuable research targets as many highly desirable properties of plants and animals (such as growth rate and height) fall into this group. However, associating biological markers with these traits is incredibly challenging, in part due to their small effect sizes. LÄS MER