Essays about: "evolutionary history"

Showing result 16 - 20 of 39 essays containing the words evolutionary history.

  1. 16. Evolutionary History of Nickel-Dependent Enzymes : Implications for the Origins of Life.

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Paleobiologi

    Author : Reem Hallak; [2021]
    Keywords : nickel; enzymes; redox; origin of life; LUCA; ancestral reconstruction; phylogeny; phyletic patterns;

    Abstract : Nickel enzymes have been suggested, through numerous phylogenetic studies, to have been among the very first catalytic compounds on the early Earth, possibly present in the last universal common ancestor (LUCA) or prior to the onset of life. This is because of the type of reactions catalyzed by some of these enzymes, the nature of organisms that utilize them, their distribution in the tree of life, and their key roles in what is now thought of as possibly one of the oldest carbon fixation pathways, the Wood-Ljungdahl (WL) pathway. READ MORE

  2. 17. The evolutionary history of phosphorus transporters in arbuscular mycorrhizal fungi

    University essay from Uppsala universitet/Systematisk biologi

    Author : Lovisa Lundberg; [2021]
    Keywords : arbuscular mycorrhizal fungi; phosphorus transporters;

    Abstract : Arbuscular mycorrhizal (AM) fungi are obligate biotrophs that formsymbiosis with plants by colonizing their roots. The fungus supplies thehost plant with various nutrients, including phosphorus. Phosphorus iscrucial for the development of plants and is hard to acquire in soilsince it can be scarce and has a slow motility. READ MORE

  3. 18. Development and validation of bioinformatic methods for GRC assembly and annotation

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Roberto Rossini; [2020]
    Keywords : GRC; Germline restricted chromosome; kFish; assembly;

    Abstract : This thesis presents the work done during my master degree projects under the supervision of Alexander Suh and Francisco J. Ruiz-Ruano. My work focused on the development of in-silico methods to improve the assembly of the Germline Restricted Chromosome (GRC) of songbirds, more specifically that of zebra finch. READ MORE

  4. 19. Evolutionary history and local adaptation in Scottish populations of Populus tremula

    University essay from SLU/Dept. Of Plant Biology

    Author : Jonathan R. Wilson; [2019]
    Keywords : local adaptation; population structure; selective sweep; synteny;

    Abstract : From a subset of P. tremula samples taken from across Europe and China, principal component analysis of genetic variation indicated population structure in the Scottish population compared with the rest of Eurasia. READ MORE

  5. 20. Estimating the Early Evolution of Brachiopods Using an Integrated Approach Combining Genomics and Fossils

    University essay from Uppsala universitet/Paleobiologi

    Author : Chloé Robert; [2019]
    Keywords : Brachiopoda; evolutionary history; phylogeny; Maximum likelihood; Bayesian inference; fossil calibrations; Brachiopoda; evolutionhistoria; fylogeni; Maximum likelihood-metoden; Bayesiansk statistik; fossilkalibering;

    Abstract : The Brachiopoda, a major group of the Lophotrochozoa, experienced a rapid early evolutionary diversification during the well-known Cambrian explosion and subsequently dominated the Palaeozoic benthos with its diversity and abundance. Even though the phylogeny of the Lophotrochozoa is still hotly debated, it is now known that the Brachiopoda are a monophyletic grouping. READ MORE