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Midterm1Key.a10 - PLANT BIOLOGY 113 SPRING 2010 NAME KEY...

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P LANT B IOLOGY 113, S PRING 2010 M IDTERM #1 P AGE 1 A PRIL 22, 2010 NAME KEY HARD COPY OF ANSWERS DUE BY 5 PM, FRIDAY, APRIL 23 IN THE PLANT BIOLOGY OFFICE, 1002 LS (note - the office is closed between noon and 1 pm and at promptly at 5 pm). You can use your notes, the course website, and text only. You are operating under the UC Davis Code of Academic Conduct - DO NOT CONSULT WITH ANYONE ABOUT THIS EXAM. Please be sure that you have seven pages. Some of the examples are hypothetical. 300,000 POINTS TOTAL QUESTION 1 (15,000 POINTS) : What is the difference between the sporic and gametic life cycles? Which life cycle do plants undergo? 1. Sporic life cycle: diploid organism produces spore, spore develops into gametophyte, gametophyte produce gametes (5,000 points). Gametic life cycle: gametes produced directly from diploid organism (5,000 points). 2. Plant undergo the sporic life cycle (5,000 points). QUESTION 2A (10,000 POINTS) : What is the C-value paradox? Organismal complexity does not correlate with haploid genome size. QUESTION 2B (15,000 POINTS) : Many plants are polyploid. Does polyploidization explain the C-value paradox? The C-value paradox states that organismal complexity does not correlate with haploid genome size. Although polyploids have more total nuclear DNA than diploids, haploid genome size is not affected appreciably. Therefore, polyploidy does not explain the C-value paradox.
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