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Visar resultat 1 - 5 av 7 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Demography of Birch Populations across Scandinavia

    Master-uppsats, Uppsala universitet/Växtekologi och evolution; Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Janek Sendrowski; [2022]
    Nyckelord :birch; betula; pubescens; pendula; betula pubescens; betula pendula; silver birch; downy birch; demography; population structure; distribution of fitness effects; DFE; dadi; UMAP; PCA; ADMIXTURE; polyDFE; ice age; glaciation; tree; boreal forest; climate change; adaption; tetraploid; diploid-tetraploid introgression; Scandinavia; genetic cluster; pipeline; snakemake; bioinformatics; reproducible; population genetics; postglacial population expansion; demographic history; FEEMS; site-frequency spectrum; SFS; last glacial maximum; LGM; workflow; python; population expansion; population growth; EST-SFS; 0-fold degenerate; 4-fold degenerate; maximum likelihood estimation; MLE; variant call format; VCF; single-nucleotide polymorphism; SNP;

    Sammanfattning : Boreal forests are particularly vulnerable to climate change, experiencing a much more drastic increase in temperatures and having a limited amount of more northern refugia. The trees making up these vast and important ecosystems already had to adapt previously to environmental pressures brought about by the repeated glaciations during past ice ages. LÄS MER

  3. 2. Biogeography of Norway spruce (Picea abies (L.) Karst.) : Insights from a genome-wide study

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Zandra Fagernäs; [2017]
    Nyckelord :Genetic diversity; genotyping-by-sequencing; Picea abies; population structure; postglacial migration;

    Sammanfattning : Norway spruce (Picea abies (L.) Karst.) together with the sister species Siberian spruce (P. obovata Ledeb. LÄS MER

  4. 3. Developing species-diagnostic microsatellite markers in Lepidium species

    Master-uppsats, SLU/Dept. of Plant Breeding (from 130101)

    Författare :Nathan Zivi; [2016]
    Nyckelord :Lepidium; Lepidium campestre; microsatellite; SSR; SNP; domestication; breeding; molecular markers;

    Sammanfattning : Lepidium campestre is a potential oil and catch crop that is currently undergoing multiple studies in order to domesticate the species. Traits from four closely related species have been identified as desirable by researchers at the SLU, but more information is needed before the closely related species can be used to their fullest potential. LÄS MER

  5. 4. Genflödet från genetiskt modifierade grödor till vilda populationer

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Isaias Afewerki; [2014]
    Nyckelord :;

    Sammanfattning : Tillämpningen av genetiskt modifierade (GM) grödor har varit utbredd över hela världen och har ökat markant sedan den första GM-grödan blev tillgänglig för kommersiellt bruk 1996. Sedan starten har det tillkommit mycket forskning kring risken för spridning av transgener från grödor till vilda populationer. LÄS MER

  7. 5. Analysis of the biological role of prion-related Shadoo protein on early mouse embryogenesis

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Kadambari Chachondia; [2012]
    Nyckelord :Prion-family; Shadoo; Transgenesis; Mouse; Embryogenesis;

    Sammanfattning : The prion family comprises of Prion, Shadoo and Doppel proteins, encoded by Prnp, Sprn and Prnd, respectively.Expression pattern of these genes in early mouse embryogenesis was investigated using RT-PCR experiments on FVB/N mice embryosand by in situ hybridization (HIS) at 3 early developmental stages. LÄS MER