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Articles 91 - 94 of 94
Full-Text Articles in Life Sciences
Determination Of The Essential Functions Of A Conserved Cyclin, Cyclin Y, In Drosophila, Dongmei Liu
Determination Of The Essential Functions Of A Conserved Cyclin, Cyclin Y, In Drosophila, Dongmei Liu
Wayne State University Dissertations
The Drosophila gene CG14939 encodes a member of a highly conserved family of cyclins, the Y type cyclins, which have not been functionally characterized in any organism. Here I report the generation and phenotypic characterization of a null mutant of CG14939, which we rename Cyclin Y (CycY). I show that the null mutant, CycYE8, is homozygous lethal with most mutant animals arresting during pupal development. The mutant exhibits delayed larval growth and major developmental defects during metamorphosis. Heat shock-induced expression of CycY at different times during development resulted in variable levels of rescue, the timing …
Towards An Understanding Of The Etiology Of Abdominal Aortic Aneurysms: Identification Of Genes Implicated In Aaa Risk And Development, John Hunt Lillvis
Towards An Understanding Of The Etiology Of Abdominal Aortic Aneurysms: Identification Of Genes Implicated In Aaa Risk And Development, John Hunt Lillvis
Wayne State University Dissertations
Abdominal aortic aneurysm (AAA) is a common disease for which mechanisms of formation are still not well understood. Despite a strong genetic component to AAA risk, specific risk alleles are still largely unidentified. AAA is also a localized disease with a majority occurring in the infrarenal abdominal aorta and is six times more common than aneurysms of the thoracic aorta. To determine whether risk alleles are present in functional positional candidate genes. we: 1. performed a genetic association study using DNA from AAA cases and controls in ten candidate genes and 2. performed exon sequencing on three genes with evidence …
Tracking Profiles Of Genomic Instability In Spontaneous Transformation And Tumorigenesis, Lesley Lawrenson
Tracking Profiles Of Genomic Instability In Spontaneous Transformation And Tumorigenesis, Lesley Lawrenson
Wayne State University Dissertations
The dominant paradigm for cancer research focuses on the identification of specific genes for cancer causation and for the discovery of therapeutic targets. Alternatively, the current data emphasize the significance of karyotype heterogeneity in cancer progression over specific gene-based causes of cancer. Variability of a magnitude significant to shift cell populations from homogeneous diploid cells to a mosaic of structural and numerical chromosome alterations reflects the characteristic low-fidelity genome transfer of cancer cell populations. This transition marks the departure from micro-evolutionary gene-level change to macro-evolutionary change that facilitates the generation of many unique karyotypes within a cell population. Considering cancer …
Genic Population Structure And Gene Flow In The Northern Flicker (Colaptes Auratus) Hybrid Zone, Thaddeus A. Grudzien, William S. Moore, J. Richard Cook, Danilo Tagle
Genic Population Structure And Gene Flow In The Northern Flicker (Colaptes Auratus) Hybrid Zone, Thaddeus A. Grudzien, William S. Moore, J. Richard Cook, Danilo Tagle
Biological Sciences Faculty Research Publications
The Yellow-shafted Flicker (Colaptes auratus auratus) and Red-shafted Flicker (C. a. cafer) form a stable, narrow hybrid zone on the western Great Plains of North America. Allozyme data were obtained from 31 structural gene loci for 33 samples representing 246 Northern Flickers from throughout the Great Plains. Flickers were approximately equivalent to other birds in terms of proportion of polymorphic loci (P = 0.207) and average heterozygosity (H = 0.056). There was no concordant variation between plumage characters and allelic frequencies.
Gene-diversity analysis indicated that 92.5% of the genic variation occurred as within-deme heterozygosity ( …