prelim2 Fall 2008 - For grading use only _ mc _ 11 BioEE...

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BioEE 2780 YOUR NAME ___________________________ PLEASE PRINT CLEARLY Midterm II – November 13, 2008 INSTRUCTIONS • Do not open the exam until you are told to do so. • Be sure to print your name on this page and on the written-answer pages. • IMPORTANT: there are four written-answer questions at the end of this exam, but only three will be graded and count towards your point total . Be sure to indicate below which question you do NOT want us to grade. • Questions 11-14 are each meant to be answered concisely. No problem requires the use of a calculator, and calculators and other electronic devices are not allowed to be used during the exam. You may use only the space provided in the boxes for your written answers. It is essential to plan your responses before answering, as well-thought-out, concise responses will score much higher than rambling answers that include tangential or irrelevant information. • Be sure to sign the academic integrity contract below: ACADEMIC INTEGRITY I, ____________________________agree to abide by the Cornell University Code of Academic Integrity in completing this exam. I am aware that the Code of Academic Integrity specifies that all answers must be my own work based on my own knowledge of the course content. MULTIPLE CHOICE ANSWER SHEET FOR QUESTIONS 1-10 CIRCLE one answer per question. If you change your answer and want to be sure that we interpret your change correctly, use the line at right to print your response too. (4 points each) 1. A B C D E _________ 2. A B C D E _________ 3. A B C D E _________ 4. A B C D E _________ 5. A B C D E _________ 6. A B C D E _________ 7. A B C D E _________ 8. A B C D E _________ 9. A B C D E _________ 10. A B C D E _________ Circle the written question that you do NOT want us to count towards your total: 11 (poppies) 12 (genetic drift) 13 (HWE) 14 (snakes) For grading _______ _______ _______ _______ _______ exam total: ___________ use only mc 11 12 13 14 /100 pts possible
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Multiple-Choice Questions VERY IMPORTANT: be sure to record your multiple-choice answers on your answer sheet on the front page of this stapled exam. Answers recorded here will not be graded! All multiple-choice questions are worth 4 points each. 1. Consider a population of organisms. Which of the following will cause the population’s genotype frequencies, but not allele frequencies, to deviate from Hardy-Weinberg expectations? a. All homozygous recessive individuals die at birth b. Homozygous recessive individuals prefer to mate with other homozygous recessive individuals c. The population lives in an environment that causes it to have a highly elevated mutation rate d. A natural disaster kills all but a few individuals in the population, but does so at random with respect to their genotypes and phenotypes e. All of the above will change both genotype and allele frequencies. 2
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prelim2 Fall 2008 - For grading use only _ mc _ 11 BioEE...

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