2009 Final - BILD 3 Spring 2009 Dr Kohn Section or TA FINAL...

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BILD 3, Spring 2009. Dr. Kohn FINAL Page 1 Section or TA ________________ Name_________________ Directions: There are 17 pages in this exam, not including this cover sheet. Please put your name on each page. Only exams written in ink will be accepted for regrades. You can use the space below the line on this page as scratch paper, and there is additional space for scratch on the last page. There are 56 questions. Please be sure your exam is complete. Read each question carefully. Think before you write and confine your answer to the space provided. We will collect exams promptly at 10:50. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page 10. Page 11. Page 12. Page 13. Page 14. Page 15. Page 16. Page 17. Total
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 2 Section or TA ________________ Name_________________ Course total and grade: __ Space below here may be used as scratch paper
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 3 Section or TA ________________ Name_________________ 1. (6 pts) Southern coastal California is considered a world-wide hotspot of endangered biodiversity. Why does this region contain so many species in danger of global extinction? 2. (6pts) What are the three mechanisms of ecological succession? a. b. c. 3. (4pts) The Divergence time between two races of body lice on humans has been used as evidence of: a. Ancient racial divides among humans b. Contact between Homo sapiens and Homo erectus before the extinction of the latter. c. Acquisition of lice when HIV jumped from chimps to humans 4. (2pts) The nutrient that is most limiting for primary productivity in the open ocean is: a. Nitrogen b. Calcium c. Iron d. Phosphorous 5. (4pts) The evolution of a diverse group of species from a common single ancestral species upon introduction to a new location is called ________________________. (two words)
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 4 Section or TA ________________ Name_________________ 6. (6pts) In lecture, we learned that Gray Tree frog females prefer to mate with males with long songs. Briefly describe the experiment that was done to test whether long songs were an honest indicator of higher male quality (good genes) and whether the results supported the good genes hypothesis. 7. (4pts) A food chain has three trophic levels. An increase in primary production causes a(n) increase/decrease (circle one) in the top predators. Looking at it in the other way, an increase in top predators should cause a(n) increase/decrease (circle one) in primary production. 8. (4pts) (circle all correct statements) RNA is thought to be the most likely genetic material of the earliest organisms because: a. It is more stable than DNA b. It is capable of acting as an enzyme to catalyze reactions c. It is capable of acting as an enzyme to catalyze its own replication d. It forms under Miller-Urey experimental conditions e. None of the above 9. True/False (circle one, 4pts) Analysis of DNA from Neanderthals shows that there was some gene flow between Homo neanderthalensis and Homo sapiens .
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