Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

PDF

University of Richmond

Development

Honors Theses

Articles 1 - 3 of 3

Full-Text Articles in Entire DC Network

The Exploration Of Novel Symbiotic Bacteria That May Have Influential Roles In Sponge Life History, Brittany E. West Jan 2008

The Exploration Of Novel Symbiotic Bacteria That May Have Influential Roles In Sponge Life History, Brittany E. West

Honors Theses

Sponges produce an impressive variety of secondary metabolites that perform a variety of ecological functions. Many marine sponges even harbor diverse carotenoid compounds, an unusual class of secondary metabolites that animals are incapable of producing. Furthermore, sponges serve as hosts to an astonishingly diverse microbial community that can occupy up to sixty percent of a sponge's biomass. Our research ultimately hopes to link microbial species to the production of secondary compounds, like carotenoids, and to assess the ecological role of such compounds and their effect on sponge life history strategy. This study describes the ecological distribution of two species ...


Figuring The Refugee, Genevieve Goulding Apr 2007

Figuring The Refugee, Genevieve Goulding

Honors Theses

''Figuring the Refugee" explores humanitarian relief for refugees as a discourse; a system of communication and identity-making which creates a subhuman refugee and perpetuates the problems of assistance. Through an auto-ethnographic narrative of my experience in the camp, I consider how the space itself creates exploitative binaries between aid workers and refugees. In an analysis of the United Nations 2006 film appeal, I argue that the discourse is normalized by images of the dehumanized refugee. The rhetoric of the film appeal limits the response of the western viewer to an uncritical sympathy, and allows for ineffective models of refugee assistance ...


The Effects Of Thyroid Hormone On Myosin Heavy Chain A-7 Production In Xenopus Laevis Tail And Leg Muscles, Andrew R. Noble Jan 1996

The Effects Of Thyroid Hormone On Myosin Heavy Chain A-7 Production In Xenopus Laevis Tail And Leg Muscles, Andrew R. Noble

Honors Theses

The present research examines the expression of myosin heavy chain genes in muscle fibers in Xenopus laevis. Characteristically different muscle fibers are expressed before and after metamorphosis. The embryonic myosin proteins that are synthesized during the tadpole stages are replaced with adult myosin heavy chains at metamorphosis. At least one of the adult myosin genes, called A-7, is expressed only in the adult animals, not in tadpoles. The controlling factor or trigger for the expression of this adult gene still remains unknown. There are a number of possible explanations for the A-7 regulation at metamorphosis, including changes in particular hormone ...