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BIOLOGY 263, FALL 2003 FINAL EXAMINATION Name Date: Laboratory Practical Stations. Answer the questions at each station. (50%, 2-4% per station) 1. a. 14. a. b. b. 2. a. 15. a. b. b. 3. a. 16. a. b. b. 4. a. 17. a. b. b. 5. a. 18. a. b. b. 6. a. 19. a. b. b. 7. a. 20. a. b. b. 8. a. 21. a. b. b. 9. a. 22. a. b. b. 10. a. 23. a. b. b. 11. a. 24. a. b. b. 12. a. 24.a. and 24.b. are worth double (2% each) b. 13. a. b.Hypothesis Evaluation. Is there statistically significant support for each of the following hypotheses? (6%, 2% each) 1. Hypothesis = Penicillium notatum grows faster under warmer temperatures. Data = Mean colony diameter of P. notatum after 3 days at 25°C = 4.8 cm, Mean colony diameter of P. notatum after 3 days at 30°C = 4.4 cm, p value = 0.040 Circle one: Hypothesis Supported Hypothesis NOT Supported 2. Hypothesis = Bacterial species diversity is greater on the upper surface of leaves than on the lower surface of leaves of white oak trees. Data = Mean number of species per swab of leaf upper surface = 4.1, Mean number of species per swab of leaf lower surface = 5.7, p value = 0.044 Circle one: Hypothesis B Supported Hypothesis B NOT Supported 3. Hypothesis = Squirrels are more common on Regis’ campus than in the surrounding neighborhoods. Data = Mean number of squirrels per 10 m2 area on Regis campus = 1.2, Mean number of squirrels per 10 m2 area on Regis campus = 0.6, p value = 0.500 Circle one: Hypothesis B Supported Hypothesis B NOT Supported Definitions. Define each BIOLOGICAL term from THIS LABORATORY in an accurate, concise, and lucid manner. (20%, 4% each) 1. Bacterial Lawn: 2. Bacterial Streaking (also indicate the goal of this procedure): 3. Forb: 4. Petiole: 5. Positive Control:Data Analysis. Complete each exercise in as concise and lucid a manner as possible. 1. Given the following data from a small, reproductively isolated, constant-sized population, a) calculate the allele and genotype frequencies for every time period. (8%) b) Create a properly labeled graph of the allele frequency of one of the alleles (NOT both) over time. (4%) c) Propose a plausible population genetic/evolutionary explanation for what you see happening (or not happening) to the allele and genotype frequencies over time. (2%) individuals gener-ations BB Bb bb 0 4 8 4 5 5 7 4 10 5 5 6 15 6 4 6 20 8 1 7 Experimental Design. (10%) Use the back of this page to design a rigorous but relatively simple experiment with appropriate control(s) and replication to test a hypothesis of your construction. Rollie pollies (small terrestrial crustaceans) walk when they are not in their usual habitat under rocks or other debris. Once under a rock the rollie pollies stops walking. Develop a hypothesis concerning the stimulus associated with “being under a rock” that stops walking behavior in rollie pollies. Keep in mind that at being under a rock means experiencing the conditions of low/no light, lower temperature, and higher humidity. (A) What is your hypothesis and why did you propose it? (B) What methods (and very generally what materials) will you use to test this hypothesis? Remember that your test only has to address your


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RU BL 263 - FINAL EXAMINATION

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