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Showing 1 to 20 of 22 for “"Gene diversity"”.

  1. Brook Trout Population Genetic Tools for Natural Barriers in Fragmented Subwatersheds

    Timm, Anne LouiseVirginia Tech2010

    … was to investigate applications of population genetic analysis tools as indicators of barrier effects on brook trout populations in fragmented subwatersheds. In chapter1, I tested the hypothesis that brook trout population genetic differentiation (FST) above and below barriers will differ in …

    vt Repository record

  2. Barley pathogens in Iceland: Identification, virulence and genetic structure of major barley pathogens in Iceland

    Tryggvi Sturla Stefánsson 1982-2012

    … Iceland in August 2007 in order to analyze the diversity of fungal species growing on barley. Twelve fungal species were found on 277 successfully analyzed leaves, including two widespread barley pathogens, Rhynchosporium secalis and Pyrenophora teres f. teres, the causal agents of scald and net …

    ag-u-iceland Repository record

  3. Allozyme Diversity and Hybridization in Castanea Pumila (Section Balanocastanon, Fagaceae)

    DeBacker, Michael David

    … yielding a lower than average estimate of gene diversity (Ht=0.082). For this locus the genetic differentiation among populations (Fst=0.129) is slightly greater than average for species with similar life histories. A significant correlation between genetic distance and geographic distance …

    mo-state Repository record

  4. The Genetic Consequences of Disjunction in Campanula Rotundifolia (Angiospermae: Campanulaceae)

    Waller, Gwenlyn Kay

    … small, isolated populations will contain less genetic diversity and be genetically distinct from neighboring populations due to genetic drift. These predictions were tested for the flowering plant species Campanula rotundifolia by comparing three disjunct Missouri populations and eighteen …

    mo-state Repository record

  5. Using a barley Nested Association Mapping (NAM) Population to mine wild barley germplasm for crop improvement

    Draicchio, FulviaUniversity of Dundee2018

    … also caused fixation and narrowing of the genetic base of cultivated barley, making this crop less able to adapt to biotic and abiotic changes than its wild ancestor. This narrowed gene diversity is particularly acute in the pericentromeric heterochromatic (PCH) genomic regions because of …

    dundee Repository record

  6. Molecular diversity of Primula apennina and phylogeny of Primula Subsection Euauricula

    Crema, Silvia <1976>Alma Mater Studiorum - Università di Bologna2009

    … Apennines (Italy). ISSR were used to detect the genetic diversity within and among six populations representative of the species distribution range. High levels of genetic diversity were revealed both at population (PPB = 75.92%, HS = 0.204, Hpop = 0.319) and at species level (PPB = 96.95%, HT = …

    bologna Repository record

  7. Genetic Assessment of Rare Blackbanded Sunfish (Enneacanthus Chaetodon) Populations in Virginia

    Kercher, Diana Marie2014

    … data were assessed to determine the genetic characters and gene diversity of the Virginia populations. The results of these analyses were then compared to five additional populations; four from New Jersey and one from North Carolina that were known to have relatively good fitness and …

    vcu Repository record

  8. Microbial transformation of arsenic in Bengal floodplain

    Afroz, HasinaQueen's University Belfast2021

    … investigate microbial composition and functional diversity of arsenic metabolism genes and how this may be related to differences in arsenic dynamics within these soils. Compared to Pleistocene soils, the Holocene soils had higher concentrations of arsenic, other elements and pore water arsenic …

    qu-belfast Repository record

  9. Priming with Oral Progestin Before Ovulation Induction Facilitates Ovarian Function in the Cat (Felis catus)

    Bauer, Rosemary Aileen2007

    … multiple felid species as a tool for retaining gene diversity in threatened or endangered populations. Yet, pregnancy success remains low (< 5%) following AI in most felids, particularly in species that spontaneously ovulate. This failure has been attributed to variable ovarian status at the …

    maryland Repository record

  10. Population genetics prior to biological control: Ceutorhynchus weevils proposed for managing garlic mustard

    Rauth, Steven J., author, Hufbauer, Ruth, advisorColorado State University. Libraries2009

    I studied the population genetic structure of three weevil species, Ceutorhynchus alliariae, C. roberti, and C. scrobicollis, being considered for the biological control of garlic mustard, Alliaria petiolata, in North America. My first objective was to develop a polymerase chain …

    colostate Repository record

  11. Patterns of Selection In Hepatitis C and Hiv

    Irausquin, Stephanie Jimenez

    … with HIV/AIDS is 33.4 million. The extensive genetic diversity, characteristic of both Hepatitis C and HIV, has undoubtedly made vaccine development difficult and has prompted several to carefully study the relationship between virus and host.</p> <p>Analysis of complete polyprotein-encoding …

    south-carolina Repository record

  12. The analysis of Y chromosome polymorphisms in populations of the United Arab Emirates

    Sallam, Latheqia Ahmed KasimUniversity of Central Lancashire2006

    … PCR products were detected on an ABI PRISM® 310 Genetic Analyzer and the fragment sizes were analyzed by GeneScan® software. The alleles were designated according to the number of repeat units, based on the sequenced allelic ladders supplied with the kit. The project revealed several new alleles …

    cent-lancashire Repository record

  13. GENETIC AND QUANTITATIVE VARIATION IN WILD SOYBEAN (GLYCINE SOJA) POPULATIONS

    CHIANG, YUEH-CHIN

    … South Korea and Japan were studied for their genetic structure and quantitative variation. Seventy two G. soja seed accessions were examined for genetic variation by gel electrophoresis. Based on a total of 43 loci of 15 enzymes and one protein, an average of 67.4% polymorphism (at 99% level) …

    unh-thes Repository record

  14. Biosystematics of the annual species of the Mimulus guttatus species complex in British Columbia, Canada

    Benedict, Beverly G.University of British Columbia1993

    … studied. Pre-zygotic crossing barriers reduce gene exchange between M. nasutus and M. guttatus. Both pre- and post-zygotic crossing barriers have effectively isolated M. queue from M. guttatus and M. nasutus. Under most growing conditions, the three taxa can be distinguished morphologically. …

    ubc Repository record

  15. Emiliania huxleyi and climate change: a genetic and biogeographic investigation of bloom dynamics for a key phytoplankton species in the global carbon cycle

    Hinz, Daria J.University of Southampton2010

    … 2008 in Raunefjord, Norway, to map population genetics of E. huxleyi blooms in relation to ecological pressures (viruses and rapid growth), (2) biogeographic sampling of nannoplankton (2 - 20 ?m) in the SO, including E. huxleyi, to determine ecological pressures on E. huxleyi blooms in situ …

    soton Repository record

  16. Leveraging Whole Genome Sequences to Compare Mutational Mechanism and Identify Medically Relevant Variation in African versus Non-African Descend Populations

    Alosaimi, Shatha MobarakDepartment of Pathology2020

    … era in healthcare and research in identifying genetic variation in all populations. However, the African populations are still under-represented. Since African populations are being the most genetically diverse with high heterogeneity rate, we need to benchmark the Whole Genome Sequence (WGS) …

    cape-town Repository record

  17. Population Viability Analysis of Swift fox (Vulpes velox) at the Badlands National Park

    Sasmal, Indrani

    … BNP and surrounding area, (2) to determine the genetic diversity of the reintroduced population at BNP and (3) to determine habitat selection of female swift fox during the pup-rearing period (May – July), and finally, (4) to determine the viability of the reintroduced swift fox population at …

    sdstate Repository record

  18. Investigation of DNA variation in genes of the immune system in wild populations of Apodemus sylvaticus in relation to infection by Toxoplasma gondii and helminth parasites

    Shater, AF2026

    … to investigate DNA sequence variation in immune genes from Apodemus sylvaticus in relation to parasite infection. The purpose is to investigate the hypothesis that immune gene variation can influence parasite infection. Evidence from other studies, such as infection of wild voles with Borrelia …

    salford Repository record

  19. Immune gene expression and diversity in relation to gastrointestinal parasite burden in small mammals

    Axtner, JanUniversität Potsdam

    MHC genes encode proteins that are responsible for the recognition of foreign antigens and the triggering of a subsequent, adequate immune response of the organism. Thus they hold a key position in the immune system of vertebrates. It is believed that the extraordinary genetic diversity of MHC …

    potsdam-diss Repository record

  20. The Major Histocompatibility Complex in Rabbits

    Lirintzi, MarinaUniversity of Cambridge2024

    … extracellular peptides to CD4+ T-cells. The genetic diversity of MHC molecules is exhibited by their polymorphism, particularly in their antigen-binding regions. This polymorphism is maintained by mechanisms of balancing selection, such as heterozygote advantage and rare allele advantage. …

    cambridge Repository record

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