Sökning: "allele frequency"

Visar resultat 1 - 5 av 139 avhandlingar innehållade orden allele frequency.

  1. 1. Temporal allele frequency change in populations with overlapping generations : estimation of effective size of natural populations as exemplified using brown trout (Salmo trutta)

    Författare :Per Erik Jorde; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  3. 2. Accessing Genetic Variation by Microarray Technology

    Författare :Katarina Lindroos; Edwin Southern; Uppsala universitet; []
    Nyckelord :Medical sciences; microarrays; SNPs; minisequencing; four-colour detection; allele frequency; population study; evolutionary biology; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Molekylär medicin; Molecular Medicine;

    Sammanfattning : Microarray technology is a promising approach for the simultaneous analysis of multiple single nucleotide polymorphisms (SNPs), which are the most abundant form of genetic variation. In this thesis enzyme-assisted microarray-based methods were developed to improve the accuracy and genotype discrimination power of the current methods for SNP genotyping. LÄS MER

  4. 3. Genetic variation, polyploidy and hybridization in Scandinavian Anthericum ramosum and A. liliago (Anthericaceae)

    Författare :Gabrielle Rosquist; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematic botany; inbreeding depression; gene flow; introgression; hybridization; morphology; isozyme; allozyme; allele frequencies; population fragmentation; genetic diversity; geographic variation; Anthericum; Allopolyploidy; taxonomy; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : In this thesis, I investigate the differences in breeding system, levels of genetic variation and hierarchical structure of genetic diversity between Anthericum ramosum and A. liliago. The two species differ in ploidy level and flowering time, but have similar habitat preferences, reproductive biology and geographic distributions in Scandinavia. LÄS MER

  5. 4. Analysis of HLA-A2 frequency as prognostic and/or risk factors in ovarian cancer patients

    Författare :Zaynab Gamzatova; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Major histocompatibility complex antigens are mandatory for the immune response, and genetic imbalance may be linked to tumour escape. The HLA-A2 allele in Scandinavia has a high prevalence; it decreases with latitude and also with ovarian cancer mortality in Europe. LÄS MER

  7. 5. Frequency changes and equilibria in experimental populations of Drosophila melanogaster with three lethal carrying fourth chromosomes

    Författare :Agneta Södergren; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; cage populations; fourth chromosome lethals; fitness components; equilibrium conditions; selective values;

    Sammanfattning : Populations where three different lethals are segregating as alleles have been analysed for the conditions of equilibrium and for the trends during elimination of one allele. Early and late selection as well as sexdependent and sexindependent selection has been taken into consideration. LÄS MER