Search for dissertations about: "Promoter regions genetics"
Showing result 1 - 5 of 17 swedish dissertations containing the words Promoter regions genetics.
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1. Evolution of MHC Genes and MHC Gene Expression
Abstract : Polymorphism in coding regions and regions controlling gene expression is the major determinant of adaptive differences in natural populations. Genes of the major histocompatibility complex (MHC) possess a high level of genetic variation, which is maintained by selection over long coalescence times. READ MORE
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2. Functional Studies on the PDGFR α gene promoter and effects of autocrine PDGF-A stimulation in vivo
Abstract : Platelet-derived growth factor receptor α (PDGFRα) plays an important role during embryogenesis. After implantation, the patterns of expression of Pdgfrα and its ligand Pdgf-A undergo an "autocrine-paracrine transition", in that Pdgf-A becomes expressed in the ectoderm and epithelia, while Pdgfrα is expressed in the adjacent mesenchymal tissue. READ MORE
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3. Genetic and Epigenetic Variation in the Human Genome : Analysis of Phenotypically Normal Individuals and Patients Affected with Brain Tumors
Abstract : Genetic and epigenetic variation is a key determinant of human diversity and has an impact on disease predisposition. Single nucleotide polymorphisms (SNPs) and copy number polymorphisms (CNPs) are the main forms of genetic variation. The challenge is to distinguish normal variations from disease-associated changes. READ MORE
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4. Aneuploidy compensatory mechanisms and genome-wide regulation of gene expression in Drosophila melanogaster
Abstract : Stimulation or repression of gene expression by genome-wide regulatory mechanisms is an important epigenetic regulatory function which can act to efficiently regulate larger regions or specific groups of genes, for example by compensating for loss or gain of chromosome copy numbers. In Drosophila melanogaster there are two known chromosome-wide regulatory systems; the MSL complex, which mediates dosage compensation of the single male X-chromosome and POF, which stimulates expression from the heterochromatic 4th chromosome. READ MORE
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5. Genetic Aspects of Endocrine Tumorigenesis : A Hunt for the Endocrine Neoplasia Gene
Abstract : Endocrine tumors arise from endocrine glands. Most endocrine tumors are benign but malignant variants exist. Several endocrine neoplasms display loss of parts of chromosome 11 or 18, produce hormones and responds poorly to conventional chemotherapeutics. The multiple endocrine neoplasia syndromes are mainly confined to endocrine tumors. READ MORE