Sökning: "phylogenetic tree"

Visar resultat 16 - 20 av 103 avhandlingar innehållade orden phylogenetic tree.

  1. 16. The k-assignment polytope, phylogenetic trees, and permutation patterns

    Författare :Jonna Gill; Jan Snellman; Axel Hultman; Bruce Sagan; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis three combinatorial problems are studied in four papers.In Paper 1 we study the structure of the k-assignment polytope, whose vertices are the mxn (0,1)-matrices with exactly k 1:s and at most one 1 in each row and each column. LÄS MER

  2. 17. Inferring Ancestry : Mitochondrial Origins and Other Deep Branches in the Eukaryote Tree of Life

    Författare :Ding He; Sandra Baldauf; Siv Andersson; Andrew Roger; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular Phylogeny; Phylogenomics; Mitochondria; Eukaryote tree of life; Biology with specialization in Systematics; Biologi med inriktning mot systematik; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Sammanfattning : There are ~12 supergroups of complex-celled organisms (eukaryotes), but relationships among them (including the root) remain elusive. For Paper I, I developed a dataset of 37 eukaryotic proteins of bacterial origin (euBac), representing the conservative protein core of the proto-mitochondrion. LÄS MER

  3. 18. Molecular Phylogenetics of Mammals

    Författare :Morgan Kullberg; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Genetics; EST; divergence times; phylogenomics; phylogenetic reconstruction; Mammals; Eutheria; cytogenetics; Genetik; cytogenetik;

    Sammanfattning : In this thesis, the phylogenetic relationships of the Mammalia have been studied at various levels. Different sources of genetic information have been evaluated and used as phylogenetic markers. These include the well-known mitochondrial genome, cDNA from housekeeping genes and expressed sequence tags from nuclear genes. LÄS MER

  4. 19. Marsupial Mitogenomics

    Författare :Maria Nilsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Genetics; Biologi; Biology; divergence times; K T-boundary; phylogenetic reconstruction; Ameridelphia; Australidelphia; Notoryctes; Dromiciops; Marsupialia; mitochondrial genomes; cytogenetics; Genetik; cytogenetik;

    Sammanfattning : The relationships of the mammalian infraclass Marsupialia have been investigated by phylogenetic analysis using completely sequenced mitochondrial genomes. The organisation and structure of the marsupial mitochondrial genomes deviates from the general mammalian structure. LÄS MER

  5. 20. A forest dark : an evolutionary history of Norway spruce

    Författare :Alexis R. Sullivan; Xiao-Ru Wang; Nathaniel Street; María Rosario García-Gil; Bengt Oxelman; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phylogenetics; genome assembly; recombination; Picea; hybridization; mitogenome; Norway spruce; phylogeography; phylogenetic networks; plastome;

    Sammanfattning : Embedded within the relationships among species is a dense forest of gene trees, each with a potentially unique and discordant history. Such widespread genealogical heterogeneity is expected, but embracing this hierarchy of discordance while reconstructing the histories of populations and species remains a major challenge. LÄS MER