Sökning: "introgression"
Visar resultat 16 - 20 av 44 avhandlingar innehållade ordet introgression.
16. Genetics and the Origin of Two Flycatcher Species
Sammanfattning : In this thesis, different genetic tools are used to investigate pre- and postzygotic barriers to gene exchange and their role in speciation in the pied flycatcher (Ficedula hypoleuca) and the collared flycatcher (F. albicollis). This species complex consists of four genetically distinct clades that apparently diverged in allopatry (I). LÄS MER
17. Hybridisation between introduced brown hares and native mountain hares in Sweden
Sammanfattning : To investigate the extent and effect of hybridisation between wild sympatric populations of introduced brown hares (Lepus europaeus) and native mountain hares (L.timidus) in Sweden, the geographic distribution of genetic variation in mitochondrial DNA (mtDNA) and nuclear DNA microsatellite markers were analysed within and between the two species and their presumed hybrids. LÄS MER
18. Rates and patterns of bryophyte molecular evolution
Sammanfattning : Plants have been growing on land for at least 450 million years. The bryophytes comprising the three phyla liverworts, mosses and hornworts, are considered to be the closest extant relatives to the plants that colonized land. LÄS MER
19. Genetic analysis of autoimmune and metabolic traits in chickens
Sammanfattning : Studying how changes in DNA affect organisms and gene functions, can give us an increased understanding of the genetic regulation of diseases and metabolic traits. Chickens and other farm animals have long been used as a tool to study human diseases and other complex traits since they provide an excellent opportunity to study these traits in a controlled environment. LÄS MER
20. Gene transfer by interspecific hybridization in bryophytes
Sammanfattning : The role of hybridization in evolution has been debated for more than a century regarding bryophytes (mosses, liverworts, and hornworts) as well as most other organisms. Bryophytes have haplodiplontic life cycles with a dominant haploid generation. LÄS MER