Sökning: "Niclas Backström"

Hittade 4 avhandlingar innehållade orden Niclas Backström.

  1. 1. 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

  3. 2. The Evolution of Sex Chromosomes and Dosage Compensation in Structurally Dynamic Butterfly Genomes

    Författare :Lars Höök; Niclas Backström; Elina Immonen; Beatriz Vicoso; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sex chromosome evolution; Dosage compensation; Sex-biased gene expression; Faster-Z; Lepidoptera; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Sammanfattning : Dimorphic sex chromosomes have evolved independently throughout evolution from initially homologous autosomes. Recombination suppression between the sex chromosomes causes one sex chromosome to degenerate, which will influence evolution of sex-linked genes. LÄS MER

  4. 3. Rates and patterns of genome evolution in Lepidoptera

    Författare :Karin Näsvall; Niclas Backström; Simon Martin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chromosomal rearrangements; karyotype evolution; recombination rate; Lepidoptera; genome structure; molecular evolution; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Sammanfattning : The evolutionary consequences of genome restructuring and chromosomal rearrangements can be significant, but the underlying mechanisms are poorly understood. This thesis explores the relationships between genome restructuring, recombination, and maintenance of genetic diversity in different butterfly species. LÄS MER

  5. 4. Speciation genetics of recently diverged species

    Författare :Venkat Talla; Niclas Backström; Nicola Nadeau; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speciation; Leptidea; Lepidoptera; chiffchaff; Cryptic species; genome-scan; Diapause; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Sammanfattning : Species differentiation can be a consequence of evolutionary forces including natural selection and random genetic drift. Patterns of genomic differentiation vary across the tree of life. This variation seems to be dependent on, for example, differences in genomic architecture and molecular mechanisms. LÄS MER