Sökning: "Staffan Lake"

Hittade 2 avhandlingar innehållade orden Staffan Lake.

  1. 1. Recombination frequencies in hybrid females of inbred lines of Drosophila melanogaster

    Författare :Staffan Lake; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The intention of the present study was to examine the effect of the maternal genome and cytoplasm, of the attachment of extra heterochromatin of the transposing of heterochromatic regions into euchromatic parts and of temperature shocks during various stages of the development on recombination in Drosophila metanogaster. The access to marker genes along the X-chromosome induced in the inbred line made it possible to examine this array of different conditions in females with an isogenic background. LÄS MER

  2. 2. Population size and genetic diversity of Nigerian lions (Panthera leo)

    Författare :Talatu Tende; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; non-invasive sampling; faecal DNA; protected area; isolated population; Panthera leo;

    Sammanfattning : High growth rate in human populations, agricultural developments and industrialization have impinged negatively on the natural habitats of most large carnivores, causing fragmentation, isolation and consequently reduction in population size. Lions (Panthera leo) that once roamed most parts of Southern Europe, Asia, the Middle East, North America, northern part of South America and most parts of Africa are today found only in parts of sub-Saharan Africa and at a single site in India. LÄS MER