Biol223_Smith_01_2003-2004Fall_ExamI - Biol223_Smith Exam I...

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Biol223_Smith Exam I 12 November 2003 PAGE 1 of 7 Exam # Biology 223, sections 5 & 6 Fall 2003 Exam I, 12 November 2003 7:30 am - 8:50 am EXAM COPY # No notes, no calculators, no phones. Write your name and student ID number at the top of this page. Use non-erasable ink, write on the back if needed. Write legibly and succinctly, you will be graded on the quality of your communication, and that includes expressing ideas clearly using proper terminology. Show your work and justify your conclusions, partial credit is given, but likewise, do not ramble. Negative points may be assigned to frivolous and grossly incorrect answers. 11 Questions on 7 pages total. 100 points possible, 80 minutes. Note points per question and spend your effort accordingly! codon chart Second base
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Biol223_Smith Exam I 12 November 2003 PAGE 2 of 7 Exam # Question 1 for 5 points In a hypothetical disease, a man has a defect in meiosis, such that no crossing over occurs. If meiosis and spermatogenesis is still successful, how many different genotypes of gametes can he produce? Question 2 for 6 points Assume there are approximately 7 x 10 13 cells in human body, each containing 7 x 10 9 bp of DNA, and 5 billion people on Earth. And using the following destinations: A neighboring cell (500 nm) Through a fingernail (0.5 millimeter) From head to toe (2 m) To Cyprus (3 x 10 5 m) To the Moon (4 10 8 m) To the Sun (1.5 x 10 11 m) To the nearest star (Proxima Centauri 4 x 10 16 m) To the center of our galaxy, the Milky Way (3 x 10 20 m) To the neighboring galaxy Andromeda (2.1 x 10 22 m) To the edge of the observable universe (1 x 10
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This note was uploaded on 02/23/2010 for the course BIOL 223 taught by Professor Smithanddarwiche during the Spring '10 term at American University of Beirut.

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Biol223_Smith_01_2003-2004Fall_ExamI - Biol223_Smith Exam I...

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