BIO 198 Genetics - Exam 1 - 2005

BIO 198 Genetics - Exam 1 - 2005 - NAME Teaching...

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NAME_________________________ Teaching Assistant: Claire Ginger (circle one) Dara Jon Emily Jozal Erin Reema BIO 198 GENETICS EXAM I October 11, 2005 125 Points 90 Min (1.4 Points/Min) Instructions : 1) Write your name at the top of each page 2) Circle your recitation TA’s name. Exams will be returned in recitation. 2) Answer questions, in the space provided, using ink (non-erasable). (Answers written in pencil will not be considered for regrade.) 3) Be clear and concise. Use pictures or diagrams where appropriate. If you change an answer, clearly cross out the information you do not wish to be considered by the graders. 1)_______/15 2)_______/15 3)_______/15 4)_______/15 5)_______/15 6)_______/15
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NAME_________________________ 7)_______/18 8)_______/17 TOTAL_______/125
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NAME_________________________ 1. (15 points) a. (10 points) Draw a diploid cell with a single pair of chromosomes labeled A & B and then illustrate how the A and B chromosomes replicate and segregate during mitosis and meiosis. i) mitosis ii) meiosis b. (5 points) Consider a cross between two (haploid) strains of Neurospora, each with a different allele at the A locus (a & A). When 500 ascospores (ordered octads) are dissected and analyzed the following data are obtained. O c t a d s A a A a A a A a A a A a A a a A a A A a a A a A a A A a a A a A A a a A a A a A A a a A a A A a ––– ––– –– –– –– –– Number 225 235 9 11 8 12 What can you conclude about the position of the A locus on its chromosome. Be as specific as possible and show your work.
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BIO 198 Genetics - Exam 1 - 2005 - NAME Teaching...

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