Aaron Secrest and Dr. Craig Thulin, Chemistry and Biochemistry Age-related macular degeneration (AMD) is the leading cause of irreversible visual impairment in the elderly and is currently untreatable. In the central region of the posterior retina (the macula), AMD is caused by damage to and subsequent death of retinal pigment epithelial (RPE) cells and, consequently, […]
Search Results for: molecular
Phylogeny of Siphonaptera in Relation to Mecoptera And The Snow Fleas Using Molecular Data From The Mitochondrial Gene Cytochrome Oxidase ii
Sonia Bake and Dr. Michael Whiting, Zoology Purpose The intent of this study is to determine the phylogeny of the order Siphonaptera (fleas) and their relationship to the order Mecoptera (scorpion flies) including the Boreidae family (snow fleas) which have traditionally been placed with the scorpion flies. A study is being conducted using molecular data […]
MOLECULAR PHYLOGENY OF THE RODENT GENUS LIOMYS: EVIDENCE FROM THE MITOCHONDRIAL CYTOCHROME B GENE
Victoria L. Vance and Dr. Duke S. Rogers, Integrative Biology The number of species described in the world greatly underestimates its biodiversity, especially in some of the areas more rich in diversity such as Mexico. Once the biodiversity in a region is understood, the issues of management and conservation can be addressed. Spiny pocket mice […]
The Way Genetic Codes Differentially Filter Molecular Evolution Varies with Nucleotide Substitution Rate Parameters
Ryan G. Christensen and Dr. David McClellan, Integrative Biology The nuclei of most extant organisms utilize the universal or standard genetic code. Other codes (e.g. vertebrate, invertebrate, echinoderm, ascidian and insect mitochondrial codes) are quite similar to the universal code (Osawa 1995). However, there are at least 1084 possible genetic codes, each of which encode […]
A Phylogeny of Robber Flies (Diptera: Asilidae) at the Subfamilial Level: Molecular Evidence
Seth Mikaya Bybee and Dr. Michael Whiting, Integrative Biology Robber flies (Diptera: Asilidae) comprise one of the largest groups of extant flies (Hull, 1962). Asilids constitute more than 500 genera (Woodley, 1989) and more than 5500 species (Lehr, 1988) with a worldwide distribution except Antarctica. Species range in size from less than one centimeter to […]
The Phylogeny of the Ephemerellidae (Ephemeroptera) Based on Molecular and Morphological Data
Jonathan Osborne and Dr. Michael Whiting, Integrative Biology A prior analysis of the families of Ephemerelloidea, based on 49 morphological characters, supported Ephemerellidae diverging basal to all other Ephemerelloid families (McCafferty and Wang, 2000). The family Ephemerellidae contains twenty genera in two subfamilies (McCafferty and Wang, 2000) and comprises the largest family among the pannote […]
A Molecular Phylogenetic Analysis of the Genus Habromys (Rodentia: Muridae)
Christopher Funk and Dr. Duke Rogers, Integrative Biology Habromys (crested-tailed mice) is a rodent genus that historically has not been analyzed well enough to be accurately classified. Before 1980, Habromys had been relegated as a subgenus of Peromyscus (deer mice), a closely related genus. As a subgenus, Habromys consisted of only three arboreal species living […]
Selection, Horizontal Gene Transfer and Convergent Molecular Evolution in Plant-Parasitic Nematodes
Adler Ray Dillman and Dr. Byron J. Adams Microbiology and Molecular Biology Background The phylum Nematoda is a large and diverse group, making-up an estimated 80% of Metazoans [1]. Of specific agricultural importance are the plant-parasitic nematodes, which are responsible for the loss of an estimated 12.3% of the world’s annual crop production [2]. We […]
Relative Rates of Molecular Evolution in Antarctic Nematodes
TJ Bliss and Dr. Byron J. Adams, Microbiology and Molecular Biology Molecular evolution is defined as any change in the genetic makeup of an organism. Since organisms of the same species and community tend to undergo similar molecular changes, rates of molecular evolution are often measured at the species level. It is well established that […]
X-ray Photoelectron Spectroscopy to Examine Molecular Composition
Amy Baker and Dr. Steve Turley Abstract The extreme ultraviolet (EUV) spectrum is becoming increasingly important. Its most promising applications include lithography for integrated circuits, space-based astronomy, and medical microscopes. Unfortunately, the optical constants of materials, particularly heavy metals, in this range are not well known. This work examines the molecular composition and oxidation rate […]
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