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dc.contributor.authorJorgensen, Janet Lynn
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2001en_US
dc.description.abstractThe taxonomy and evolutionary relationships of the Oxytropis arctica and Oxytropis campestris complexes in Alaska are poorly understood. Taxonomic disagreement has centered on which morphological characters are important in circumscribing these taxa. Several of these taxa are endemic to Alaska, including Oxytropis arctica var. barnebyana, which is currently of conservation concern. Internal transcribed spacer sequences and randomly amplified polymorphic DNA markers were employed to circumscribe these taxa. Both lines of evidence revealed one major dichotomy dividing northern populations from western populations. There is weak support for traditional taxonomies. Morphological characters used to separate these taxa do not assort to either side of the dichotomy. These traits may be controlled by one or a few genes and may not represent degrees of divergence. They may have been derived independently in each population in response to adaptation to local environmental conditions, changing quickly in response to natural selection, genetic drift, mutation, or migration.en_US
dc.titlePhylogenetic relationships of the Oxytropis campestris and Oxytropis arctica complexes in Alaska inferred from non-coding nuclear DNA and RAPD dataen_US

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    Includes WIldlife Biology and other Biological Sciences. For Marine Biology see the Marine Sciences collection.

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