Sökning: "Restricted recombination"
Visar resultat 1 - 5 av 19 avhandlingar innehållade orden Restricted recombination.
1. The evolution of flat periwinkles Littorina fabalis and L. obtusata emhasizing mitochondrial introgression and restricted recombination
Sammanfattning : The evolution of species takes in general very long time and different mechanisms are likely to operate during the various stages of this process. Accordingly speciation should be studied at different levels of species divergence. LÄS MER
2. Evolutionary Processes and Hybridization within the Peat Mosses, Sphagnum
Sammanfattning : The aim of this thesis was to reveal details of the interspecific hybridization among bryophytes as exemplified by Sphagnum capillifolium and S. quinquefarium. LÄS MER
3. Avian Malaria and Related Blood Parasites: Molecular Diversity, Ecology and Evolution
Sammanfattning : Malaria-like parasites consist of a large group of species that infects primates, rodents, bats, lizard and birds. I have focused on parasites from the genera Haemoproteus, Plasmodium and Leucocytozoon that are infecting birds. LÄS MER
4. Intestinal IgA synthesis: Localization and requirements for IgA class switch recombination
Sammanfattning : Production of IgA at mucosal surfaces is one of the most striking features of the mucosal immune system. Despite that IgA was first discovered in the 1950’s and secretory IgA described in gut secretions and breast milk in the mid 1960’s we still have limited information about the sites and exact requirements for IgA class switch recombination. LÄS MER
5. Regulation of B cell development by antigen receptors
Sammanfattning : The developmental processes of lymphopoiesis generate mature B lymphocytes from hematopoietic stem cells through increasingly restricted intermediates. Networks of transcription factors regulate these cell fate choices and are composed of both ubiquitously expressed and B lineage-specific factors. LÄS MER