Neotropical fish of the family Cichlidae are a widespread and diverse group of freshwater fish which, through adaptive radiation, have exploited various niches in freshwater ecosystems. One such evolutionary adaptation employed by numerous taxa is miniaturization, an evolutionary process in which a large ancestral form becomes reduced in size to exploit alternative niches. A considerable amount of research has been conducted on the effects of miniaturization on amphibians Hanken , but although miniaturization has been found to occur in 85 species of freshwater South American fish, little has been done to investigate the effects which miniaturization imposes on the anatomy of the fish Hanken and Wake Evolution is the process by which species adapt to environmental stresses over time. Nature imposes various selective pressures on ecosystems causing adaptive radiation, where species expand and fill new niches.
Biological Sciences thesis and dissertation collection
Jump to navigation. UA undergraduate research opportunities are available to students who wish to pursue a faculty mentored, hands-on learning experience beyond the classroom setting. There are a variety of ways students can become involved in research. Some of the undergraduate research programs are quite competitive and have strict eligibility and application requirements whereas other methods of research involvement are not as restrictive. Most faculty research mentors are interested in working with students who are hard-working, persistent, and dedicated to the project. Being involved in an undergraduate research experience can give a student an opportunity to explore their major discipline more extensively or an opportunity to work in another discipline. Keep in mind, many faculty members require prerequisite coursework; whereas, other faculty will provide training as needed for the research project.
Whether based in the laboratory or not, the thesis should demonstrate a solid knowledge of molecular biology and of the problem under analysis. It should move logically from this background to one or more clearly articulated, testable hypotheses. Most students elect to work in an adviser's laboratory lab-based thesis. The student works independently but under supervision to plan and conduct experiments to advance scientific knowledge. Students are expected to analyze and interpret critically the results of experiments, to use their results to guide subsequent experiments, and to integrate knowledge from various sources.
Skip to main content. Participants in the honors program conduct original, independent research in the biological sciences and write an honors thesis formatted as a scientific paper in the field of study. All students in the program are mentored by a Cornell faculty member on the Ithaca campus. After successful completion of the honors program students graduate with special distinction. Summa cum laude, etc.