exam2key-311Dsp09 - Dr. Reichlers Bio 311D class time:_...

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Dr. Reichler’s Bio 311D class time:_________ Print Name:_________KEY___________________ Exam #2 March 9, 2009 Read each question carefully and don’t hesitate to ask if a question seems unclear. If possible, answer each question in the space provided, but if needed, continue on the back. If you use a drawing as part of your answer, be sure to also include a written explanation. These questions have specific answers, although for some, more than one answer is possible. To receive full credit you must clearly and fully answer the question being asked. The points for each question are noted in parentheses totaling 103 points. 1. If two people have the same mitochondrial DNA, would they also have the same skin color? Why or why not? (8 pts) Not necessarily. With the same mtDNA they could have a common ancestor in the last 10,000 years, but their nuclear DNA, notably the genes regulating skin color could have diverged during this time. OR The mtDNA has nothing to do with skin color. OR mtDNA is inherited maternally while the nuclear DNA, skin color genes, are inherited from both parents, and therefore th nuclear DNA may have had a radically different origin than the mtDNA. Yes. With the same mtDNA they might be siblings, and therefore share the same mtDNA and nuclear DNA, skin color genes. 2. You are running an experiment where you show test subjects a 3x3 grid with pictures of faces.
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This note was uploaded on 02/01/2011 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas.

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exam2key-311Dsp09 - Dr. Reichlers Bio 311D class time:_...

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