Quiz_I_Answers07 - Quiz I BioG104Section _ Spring 2007 TA:...

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Quiz I BioG104- Section ____ Spring 2007 TA: Nirav Patel Name_______________________________ Score: ____/80 Question 1. Answer the following multiple-choice questions (8pts) For questions 1-3 consider meiosis in normal human cells. 1. How do cells at the completion of meiosis compare with cells that have replicated their DNA and are just about to begin meiosis? A. They have twice the amount of cytoplasm and half the amount of DNA. B. They have half the number of chromosomes and half the amount of DNA. C. They have the same number of chromosomes and half the amount of DNA. D. They have half the number of chromosomes and one-fourth the amount of DNA. E. They have half the amount of cytoplasm and twice the amount of DNA. 2. Crossing-over occurs during which phase of meiosis? A. prophase I B. anaphase I C. metaphase I D. telophase II E. metaphase II 3. During which phase of meiosis do centromeres of sister chromatids uncouple and chromatids separate? A. metaphase I B. anaphase I C. telophase I D. metaphase II E. anaphase II 4. How many chromatids are present in metaphase II in a cell undergoing meiosis from organism in which 2n=24? 12 24 36 48 96 Question 2. Imagine a typical animal cell with two linked genes (A and B), each with two different allelic forms. During prophase I a crossover occurs that affects Gene B, but not Gene A.
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This note was uploaded on 05/18/2008 for the course BIO G 104 taught by Professor Chen,k.c during the Spring '06 term at Cornell University (Engineering School).

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Quiz_I_Answers07 - Quiz I BioG104Section _ Spring 2007 TA:...

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