Zoology Module Exam Document (2008-2009) - Evolutionary Development Topics, Exams of Zoology

Download Zoology Module Exam Document (2008-2009) - Evolutionary Development Topics and more Exams Zoology in PDF only on Docsity! Semester I Examinations 2008 / 2009 Exam Code(s) 3BS, 3MR Exam(s) Third Undenominated Science, Third Marine Science Module Code(s) Z0313 Module(s) Evolutionary Developmental Zoology Paper No. 1 External Examiner(s) Prof. C. Holland Internal Examiner(s) Prof. W. Arthur Dr. U. Frank *Dr. Grace McCormack Instructions: Answer 4 questions. Duration 3hrs No. of Pages 2 Department(s) Zoology 1. State the Hardy-Weinberg law. Explain how the assumptions made by this law are often violated in nature. 2. Write an essay on Speciation. 3. At which stages in development are primary axes determined in Drosophila, Caenorhabditis elegans and Hydractinia? 4. What are tumor suppressor genes, and what may happen if such a gene undergoes a loss-of-function mutation? 5. The ear of a mature female mouse was exposed to intense, local UV irradiation that caused DNA damage, and hence, mutations, to some skin cells. What impact would you expect this treatment to have on her future offspring? Explain why. 6. “Insect development is compartmentalized.” Discuss this statement with reference to cell lineage studies conducted on the fruit-fly Drosophila.