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Exam 1 -- Spring 2006 FormA -- Blank

Exam 1 -- Spring 2006 FormA -- Blank - Bio 305 Spring 2006...

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Bio. 305 Spring 2006 EXAM I: Form A Name________________ 1 Genetics 305 Section (circle one): Yang Myungwon Jennifer Matthew Exam I: FORM A Spring 2006, May 18 ID# : __________________________ Please put your name on the top of all exam pages, including this page. Each question has one most correct answer. You may use a pencil when working on the exam, but all final answers must be marked on this front page in pen . Part I: Multiple Choice – 90 points Circle the correct answer for each question. 1 a b c d e 11 a b c d e 21 a b c d e 2 a b c d e 12 a b c d e 22 a b c d e 3 a b c d e 13 a b c d e 23 a b c d e 4 a b c d e 14 a b c d e 24 a b c d e 5 a b c d e 15 a b c d e 25 a b c d e 6 a b c d e 16 a b c d e 26 a b c d e 7 a b c d e 17 a b c d e 27 a b c d e 8 a b c d e 18 a b c d e 28 a b c d e 9 a b c d e 19 a b c d e 29 a b c d e 10 a b c d e 20 a b c d e 30 a b c d e Part II: True or False – 10 points 1 T F 3 T F 5 T F 7 T F 9 T F 2 T F 4 T F 6 T F 8 T F 10 T F If you feel some questions or answers warrant more lengthy comment, please mark the test pages and then indicate on this page which questions we should look over: Please check questions : _____________________________________________________ When you are finished, submit both the answer sheet and your exam.
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Bio. 305 Spring 2006 EXAM I: Form A Name________________ 2 Part 1: Multiple Choices-Choose ONE best answer (30 x 3pt) 1. A pea plant is a pentahybrid for five independently assorting gene pairs, exhibiting complete dominance at three loci and incomplete dominance at two loci. How many different phenotypes are possible among the progeny, if this pentahybrid plant is selfed? a. 10 b. 12 c. 32 d. 72 e. 108 2. In Drosophila , two eyeless mutations, Ey-1 and Ey-2 are studied. These genes are determined to be unlinked. A pure line Ey-1 mutant is crossed to a pureline Ey-2 mutant. In the F 1 progeny, the meiocytes are observed under the microscope for the chromosomal arrangements. Which one of the following diagrams best depicts the metaphase stage of meiosis I? Ey-1 Ey-2 Ey-1 Ey-1+ Ey-2 Ey-2+ Ey-1+ Ey-1 Ey-2+ Ey-2 Ey-1 Ey-1 Ey-2 Ey-2 Ey-1 Ey-1+
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Bio. 305 Spring 2006 EXAM I: Form A Name________________ 3 3. The yellow mutation is autosomal dominant to the agouti color in mice. It is also lethal in the homozygous state. Two yellow mice are mated. What is the probability of having at least 2 agouti out of 4 surviving offspring of this cross? 4. In sweet peas, the allele C is needed for color expression (cc results in no color –white). The dominant allele R (red) and the recessive allele r (blue) of a gene that assorts independently of the color expression gene. A cross between a red and a blue plant resulted in progeny as follows: 3/8 red 3/8 blue 1/4 white What were the genotypes of the plants crossed? a. CCRR x CcRr b. Ccrr x CCRr c. CcRr x CcRr d. CcRr x Ccrr e. ccRr x CcRr 5. In chicken, genotype rrpp gives single comb, R_P_ gives walnut comb, rrP_ gives pea comb, and R_pp gives rose comb. A cross was done with a walnut comb male and a single comb female. The offspring were ½ walnut comb and ½ pea comb. What was the genotype of the male?
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