Sökning: "founder"

Visar resultat 11 - 15 av 130 avhandlingar innehållade ordet founder.

  1. 11. Breeding System Evolution and Pollination Success in the Wind-Pollinated Herb Plantago maritima

    Författare :Emil Nilsson; Jon Ågren; Pia Mutikainen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Breeding system; mating system; gynodioecy; male sterility; reproductive output; self-compatibility; self-incompatibility; wind-pollination; founder event; genetic structure; Biologi; Biology; Biologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : In this thesis, I examined variation in sex expression and mating patterns in the sexually polymorphic, wind-pollinated herb Plantago maritima. With a combination of field studies, greenhouse experiments, and genetic analyses, I (a) examined factors influencing sex ratio variation in gynodioecious plants (in which hermaphrodites and females coexist), (b) discovered variation in breeding system, (c) investigated density-dependence of seed production, and (d) documented genetic variation within and among populations close to the northern range margin in Europe. LÄS MER

  3. 12. Welander distal myopathy : gene mapping and analysis of candidate genes

    Författare :Désirée von Tell; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Welander Distal Myopathy; 2p13; linkage; candidate genes; founder mutation; mutation screening.;

    Sammanfattning : Distal myopathies constitute of a very heterogeneous group of muscular disorders. Distal myopathies have previously been classified according to features such as; clinical symptoms, age of onset and histopathological changes. LÄS MER

  4. 13. Welander distal myopathy : clinical and genetic studies

    Författare :Gabrielle Åhlberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Welander distal myopathy; neurogenic component; rimmed vacuoles; linkage; chromosome 2p13; candidate genes; common founder; homozygous form; variable clinical expression;

    Sammanfattning : Distal myopathies are a group of muscular disorders described in many countries with different inheritance patterns and variable progression rates. Welander distal myopathy (WDM) is characterised by autosomal dominant inheritance, late onset and distal distribution of muscular weakness. Most cases originate from the middle parts of Sweden. LÄS MER

  5. 14. Viral dynamics and evolution following primary HIV-1 infection

    Författare :Annika C Karlsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :HIV-1; primary infection; diversity; divergence; env; gag; pol; viral load; RNA; DNA; resting CD4 T-lyrnphocytes; antiretroviral resistance; founder virus; latency; PCR; cloning; sequencing;

    Sammanfattning : The knowledge of the early events during primary HIV-1 infection (PER) is of great importance for the understanding of the pathogenesis of HIV-1. A major problem in studies on PHI is the limited amount of data accessible from the early time-points. LÄS MER

  7. 15. Essays on Corporate Finance and Asset Pricing

    Författare :Jon Frank; Mikael Bask; Lars Forsberg; Dušan Isakov; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Corporate Finance; Asset Pricing; Founding family firms; Firm performance; Firm financing; Firm investments; Stock returns; Stock-bond correlation;

    Sammanfattning : Essay 1 (with Mattias Hamberg): We study the performance of family firms with large controlling owners using unique hand-collected Swedish data; and consistent with previous studies, we find that founding family firms perform significantly better than other firms. The data allows us to also identify firms with long term non-founding owners (LTNFOs). LÄS MER