Examinations for ZO313: Evolutionary Developmental Zoology, Academic Year 2007/2008, Exams of Zoology

Download Examinations for ZO313: Evolutionary Developmental Zoology, Academic Year 2007/2008 and more Exams Zoology in PDF only on Docsity! Semester I Examinations 2007 / 2008 Exam Code 3BS, 3MR Exam Third Undenominated Science, Third Marine Science Module Code ZO313 Module Evolutionary Developmental Zoology External Examiner Prof. C. Holland Internal Examiners Prof. W. Arthur Dr. U Frank *Dr. GPMcCormack Paper No. 1 INSTRUCTIONS: Answer four questions Duration: Three Hours No. of Pages 2 Department; Zoology 1. Answer both parts A) In an experimental population of Drosophila, a sample of males and virgin females includes 66 A1A1, 86 A1A2 and 28A2A2 flies. Each genotype is represented equally in both sexes and each can be distinguished by eye colour. Determine the allele and genotype frequencies and whether or not the locus is in Hardy-Weinberg equilibrium. B) Briefly describe the different kinds of selection acting on populations. 2. Write an essay on Molecular Systematics. 3. “All speciation is allopatric in one way or another”. Discuss. 4. Which (placental) mammalian developmental stage is the equivalent of the blastula in other animals? Describe the fate of the two basic cell types composing this stage in mammals and refer also to their developmental potency. What is the main hallmark in subsequent mammalian development?