BIO
BISC120_Fall08_Edmands_Exam1

BISC120_Fall08_Edmands_Exam1 - Your Name ANSWER Midterm 1...

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Your Name: ANSWER 1 Midterm 1, BISC120L, Fall 2008 A. Multiple Choice (2 pts x 15 = 30 pts). Select the most appropriate answer and write in CAPITAL LETTERS ONLY in the accompanying box. 1. In a cross AaBbCc x AaBbCc , what is the probability of producing the genotype AABBCC? A. 1/4 B. 1/8 C. 1/16 D. 1/32 E. 1/64 2. Black fur in mice ( B ) is dominant to brown fur ( b ). Short tails ( T ) are dominant to long tails ( t) . What fraction of the progeny of the cross BbTt x BBtt will have black fur and long tails? 3. In humans, males are more often affected by sex-linked traits because 4. Natural selection is based on all of the following except E D A E
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Your Name: ANSWER 2 E. individuals adapt to their environments and, thereby, evolve. 5. Which of the following statements about Darwin's finches is false? A. They are a classic example of an adaptive radiation. B. They were critical to the development of Darwin's theory of natural selection. C. They are believed to descend from a single, mainland species. D. Their beaks have been selected to become deeper during dry years. E. They include a species of 'vampire finch' that feeds on blood. 6. Which of the following indicates a population is not in Hardy-Weinberg equilibrium? 7. In a certain group of African people, 9% are born with sickle-cell disease (homozygous recessive). If this group is in Hardy-Weinberg equilibrium, what percentage of the group has the selective advantage of being more resistant to malaria (heterozygous) than those individuals who are homozygous for normal hemoglobin or for sickle-cell disease?
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