Sökning: "Genetic differentiation"

Visar resultat 21 - 25 av 391 avhandlingar innehållade orden Genetic differentiation.

  1. 21. Genetic variation and population differentiation in the forest herb Lathyrus vernus (Fabaceae)

    Författare :Katarina Schiemann; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomy; morphology; phytogeography; inbreeding depression; Systematic botany; small population size; marginality; reproductive characters; leaflet shape; allozymes; Lathyrus vernus; genetic variation;

    Sammanfattning : In the present thesis, I investigated patterns of genetic variation in the forest herb Lathyrus vernus (Fabaceae), using plant material from different-sized populations representing three geographically separated regions: central Europe, southern and central Sweden. My studies included presumably neutral or weakly selected characters (allozymes and leaflet shape) as well as characters that should be under strong directional selection (e. LÄS MER

  3. 22. Modelling and genetic correction of liver genetic diseases

    Författare :Mihaela Zabulica; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The urea cycle is a set of biochemical reactions that converts highly toxic ammonia into urea for excretion. Deficiencies in any of the genes of the cycle can be life-threatening, with liver transplantation currently being the only definitive treatment. LÄS MER

  4. 23. Genetic Alterations in Lymphoma : with Focus on the Ikaros, NOTCH1 and BCL11B Genes

    Författare :Anneli Karlsson; Peter Söderkvist; Shi-Mei Zhuang; Jan-Ingvar Jönsson; Dan Grandér; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell proliferation; Lymphoma; Znfn1a1; Notch1; Bcl11b; chromosomal regions; Ikaros; B-cell lymphomas; Oncology; Onkologi;

    Sammanfattning : Cell proliferation is a process that is strictly regulated by a large number of proteins. An alteration in one of the encoding genes inserts an error into the regulative protein, which may result in uncontrolled cell growth and eventually tumor formation. LÄS MER

  5. 24. Morphological and Behavioural Differentiation in a Pipefish

    Författare :Sarah Robinson-Wolrath; Anders Berglund; Mats Björklund; Felicity Huntingford; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; population differentiation; phenotypic plasticity; mate choice; pipefish; video playback; Biologi; Biology; Biologi;

    Sammanfattning : A central goal of evolutionary biology is to understand the processes responsible for morphological, genetic and behavioural differentiation between sexes and among geographically distinct populations. Perhaps the most significant processes are genetic drift, natural selection, phenotypic plasticity and sexual selection. LÄS MER

  7. 25. Genetic variation in a large game species, the moose (Alces alces) : patterns of differentiation and some management implications

    Författare :Christina Reuterwall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Management of wildlife populations frequently involves selective harvesting, resulting in different death rates for different sexes and age groups. Such selectivity always has specific effects on the population breeding structure and can thereby affect the rate and magnitude of genetic changes with consequences on the genetic composition of the population. LÄS MER