MILLER, B.A.; HOESE, W.J.: Alternative conceptions in evolution: A pilot study using a pre- and post-instruction assessment to detect misconceptions college students have about evolution in introductory biology courses. Previous research has shown that students in their elementary, secondary, and college years hold misunderstandings about evolution by natural selection. Determination of which alternative concepts students […]

HAMMOND, K.A.*; CHAPPELL, M.A.: Age and Aerobic Performance in Deer Mice While it is common to examine the effects of aging on whole animal performance between juvenile and adult stages there is less of a focus on how performance changes with age within the adult animal. We examined 197 deer mice (Peromyscus maniculatus) to determine […]

TRILK, J.L.*; LINDER, A.J.; GREENE, H.M.; ALBERGHINA, D.; WICKLER, S.J.: Aerobic Improvement in horses using a lactate-guided conditioning program Although blood lactate concentrations [LA] are widely used in horse studies to assess athletic performance, they are seldom used as a guide in endurance conditioning programs. We wished to determine the magnitude and rate at which […]

STURTEVANT, MARK A.: A Laboratory Exercise for Analysis of Gene Expression and Function An important goal in life science teaching is to provide students with hands-on experiences in cellular and molecular biology concepts and techniques. This poster describes a three-step laboratory exercise that allows students to analyze expression and function of genes during development of […]

HILL, E.M.; WICKLER, S.J.*; SZEWCZAK, J.M.; GREENE, H.M.; COGGER, E.A.: 2,3-diphosphoglycerate in burros (Equus asinus) after six weeks at altitude Research from our laboratory indicates that both horses and mules increase concentrations of 2,3-DPG in their red cells after acclimatization to high altitude. This increase has been argued to aid in the acclimatization process by […]

HARMS, H.K.; PAITZ, R.T.; BOWDEN, R.M.; JANZEN, F.J.; Iowa StateUniversity; Iowa StateUniversity; Iowa StateUniversity; Iowa StateUniversity: Yolk lipid allocation varies seasonally, but not with age, in the painted turtle Although turtles are often thought to exhibit indeterminate growth, it appears that growth slows appreciably sometime after the onset of reproduction. However, because females are still […]

BOND, C.*; NEFF, J.; Greensboro College, Greensboro NC; Greensboro College, Greensboro NC: WOUND-HEALING, EXTERNAL EFFECTS AND MORPHOLOGY IN MARINE SPONGES Experiments were done to examine the effects of ambient light and flow on wound-healing in sponges; the effects of wounding on sponge internal structure were also examined. Wounds (1-5-mm gashes) were made with glass needles […]

WASKEY, TJ; HATLE, JD; JULIANO, SA; Illinois State Univ: Vitellogenin production rates underlying reproductive plasticity and canalization in the lubber grasshopper The study of physiology underlying phenotypic plasticity of reproduction seeks to explain how organisms developmentally alter reproductive tactics in response to environmental perturbations. We measured ovarian masses, oocyte lengths, and rates of egg-yolk protein […]

LEE, M.J.; Idaho State University: Visual Projections into the Brainstem of Rana pipiens The goal of this project is to identify the anatomical projections of visual neurons into the frog brainstem. Using 3000MW fluorescent dextrans and Sulforhodamine 101 (SR 101), a voltage activated dye, it was found that labeling the optic nerve yielded staining of […]

FINKLER, M.S.; Indiana University Kokomo: Variation in soil water content influences the size of laboratory-reared Chelydra serpentina hatchlings from eggs incubated in natural nest soil. Most studies that have investigated the influence of hydric conditions during incubation on reptile hatchling phenotype have employed either vermiculite or sand as incubation media, and the applicability of data […]