Browsing Department of Biology by Issue Date
Now showing items 61-80 of 195
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A Tale Of Three Phytopathogens: Impact Of Transposable Elements On Genome Evolution
(Biology, 2010-07-19)The genus Phytophthora harbors some notorious plant pathogens like Phytophthora infestans (causal of Irish potato famine), Phytophthora sojae (soybean rot agent), and Phytophthora ramorum (responsible for sudden oak ... -
Role Of Repetitive DNA In Apicomplexan Genome Evolution
(Biology, 2010-07-19)The Apicomplexa represent a phylum of obligate intracellular parasites that impart significant medical, veterinary, and socioeconomic burdens worldwide. The opportunistic, AIDS-associated, pathogen Toxoplasma gondii for ... -
Comparing The Genome Expression Profiles Of Verrucomicrobium Sp. Strain Tav2 Cells Grown Under Two Different Oxygen Concentrations
(Biology, 2010-11-01)Termites are significantly different in their lifestyles and organization but most are linked by the common trait in degrading plant material, whether it is leaf litter, wood, soil or animal waste. They consume the ... -
Reproductive Isolation In Drosophila: From Behavior To Genome
(Biology, 2010-11-01)In this study, I investigate factors underlying reproductive isolation in Drosophila. I begin (Part I) by measuring behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster, and asking the following questions: ... -
Analysis Of The Suppressive Effects By Reovirus On Rotavirus Replication During Co-infections
(Biology, 2010-11-01)Reovirus and rotavirus are both members of the Reoviridae family and commonly occur in children. Rotavirus induced diarrhea is one of the leading causes of death in children under the age of five worldwide. Identifying ... -
Characterization Of Anti-rotavirus Activities Of Saponin Extracts From Quillaja Saponaria
(Biology, 2010-11-01)Rotavirus is the leading cause of severe diarrhea disease in newborns and young children worldwide, estimated to be responsible for over 500,000 adolescent deaths mostly in developing countries each year. Rotavirus-related ... -
Explorations Of Aspects Of Mixotrophy Using Mathematical Models
(Biology, 2010-11-01)This work examined three theoretical aspects of mixotrophy, the simultaneous use of phototrophic and heterotrophic nutritional modes, and one practical application. The first study addressed the coexistence of microorganisms ... -
Using Shewanella Baltica Ecotypes As A Model For Transcriptional Variation At The Population Level
(Biology, 2011-03-03)Eukaryotic studies have shown considerable transcriptional variation among individuals of the same population. Owing to the cost of sequencing entire eukaryotic genomes, tested organisms were assumed to be genomically ... -
Environmental Regulation Of Stomate-based Defense Against Bacterial Infection in Arabidopsis
(Biology, 2011-03-03)Stomata are natural openings in the plant epidermis responsible for gas (O2 and CO2) exchange between plant interior and environment. They are formed by a pair of guard cells, which are able to close the stomatal pore in ... -
Insights Into The Transmission Of Helitrons And Their Impact On The Genome Architecture Of Myotis Lucifugus, The Little Brown Bat
(Biology, 2011-03-03)Probably the most dynamic proportion of multicellular eukaryotic genomes is composed of teeming populations of parasitic mobile DNA, called transposable elements (TEs). Helitrons are rolling circle TEs that have a limited ... -
Comparison Of The DNA Methylation Patterns Between Interspecific Xenopus F1 Hybrids And Their Parental Species
(Biology, 2011-07-14)In this study the main focus is to compare the methylation patterns of interspecific Xenopus F1 hybrids to the parental species using Methyl-Sensitive Amplification Polymorphisms (MSAPs). Genomic DNA was extracted from the ... -
Intra-specific Variation Across A Small Temperature Difference In The Spider Rabidosa rabida (Araneae: Lycosidae) From The Mountains In Arkansas
(Biology, 2011-07-14)Temperature affects all levels of biological organization and ultimately affects multiple aspects of ecological performance and fitness. Generalist arthropod predators are ectothermic and are strongly affected by temperature ... -
A Biochemical Approach To Determine The Target Site Recognition Mechanism Of The R2 Retrotransposable Elements
(Biology, 2011-07-14)Non-LTR Retrotransposons (NLRs) are selfish mobile genetic elements which parasitize the genomes of many organisms including humans. These elements transpose through an RNA intermediate and integrate directly into their ... -
Molecular Systematics Of The Coffee Snakes, Genus Ninia (Colubridae: Dipsadinae)
(Biology, 2011-10-11)Although previous studies have addressed issues relating to the systematics and taxonomy in the snake genus Ninia, the evolutionary history of the group remains largely unknown. Preliminary morphological studies have been ... -
Bioinformatic Identification Of Small RNA (and Their Targets) In The Testis Of Clawed Frogs (Xenopus And Silurana): Implications For Male Fertility
(Biology, 2012-04-11)Chapter one sets the stage for this project, which lies somewhere near the intersection of speciation, genome, and reproductive biology. Chapter two identifies miRNA with shared expression profiles (Silurana and Xenopus). ... -
Addressing Prey Selection And Predator Fitness: Ingestion By, And Growth Of Ochromonas danica On Multiple Bacterial Prey
(Biology, 2012-04-11)Nanoflagellates provide an important link in aquatic food webs by consuming bacterial biomass and subsequently providing nutrients to higher trophic levels by becoming prey themselves and regenerating nutrients consumed ... -
Targeting Of Site-specific Non-LTR Retrotransposons: Role Of Amino-terminal Domains
(Biology, 2012-04-11)Restriction-like endonuclease (RLE) bearing non-LTR retrotransposons are site-specificelements that integrate into the genome through target primed reverse transcription (TPRT). RLE-bearing elements have been used as a ... -
Arctic Arthropod Communities In Habitats Of Differing Shrub Abundance
(Biology, 2012-07-25)Recent global warming, which has been severe in the Arctic, has caused advancement in the timing of snowmelt and expansion of shrubs into open tundra. Such an altered climate may directly and indirectly (via effects on ... -
The Effects Of Mine Land Reclamation Of Herpetofaunal Communities
(Biology, 2012-07-25)Succession describes the process of community change over time after a disturbance. Understanding these processes allows ecological restoration projects to take advantage of natural community trajectories. Reclamation ... -
Characterization Of mocR, A GntR Transcriptional Regulator In Bradyrhizobium japonicum
(Biology, 2012-07-25)The GntR family is one of the most widely distributed and prolific groups of the helix-turn-helix (HTH) transcription factors. In particular, microorganisms that live in complex, fast-changing environments such as soil ...