Sökning: "hybrid inviability"

Hittade 3 avhandlingar innehållade orden hybrid inviability.

  1. 1. Hybrid sterility and genetic incompatibilities in Ficedula flycatchers

    Författare :Carolina Segami; Anna Qvarnström; Scott Edwards; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speciation; genetic incompatibilities; hybrid sterility; hybrid inviability; single-cell RNA seq; GRC; Ficedula; flycatcher; intrinsic post-zygotic isolation; BDMI;

    Sammanfattning : Although the theory behind the mechanisms generating intrinsic post-zygotic isolation is well established, very few concrete examples of genetic incompatibilities have been described, especially in vertebrates. Consequently, our understanding of the evolutionary forces shaping the appearance of genetic incompatibilities between natural populations and the overall role of genetic incompatibilities in the speciation process is limited. LÄS MER

  3. 2. Predation as a driver of reproductive isolation - from adaptive divergence to hybrid inviability

    Författare :Varpu Pärssinen; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reproductive isolation; ecological speciation; predation; adaptive radiation; evolution; behaviour; fish;

    Sammanfattning : Natural selection can play an important role in the origin of new species. When reproductive isolation evolves as a result of ecologically-based divergent natural selection, the process is referred to as ecological speciation. In most organisms, sufficient reproductive isolation is considered to be essential for the establishment of new species. LÄS MER

  4. 3. Gene Mapping in Ficedula Flycatchers

    Författare :Niclas Backström; Hans Ellegren; Juha Merilä; Uppsala universitet; []
    Nyckelord :collared flycatcher; SNP; linkage disequilibrium; genetic map; pedigree;

    Sammanfattning : In order to get full understanding of how evolution proceeds in natural settings it is necessary to reveal the genetic basis of the phenotypic traits that play a role for individual fitness in different environments. There are a few possible approaches, most of which stem from traditional mapping efforts in domestic animals and other model species. LÄS MER