98ex3 - Student name AGR 3303 Genetics(120 pts total 30 Nov...

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Student name ____________________________ (120 pts total) AGR 3303 - Genetics 30 Nov 1998 University of Florida - Fort Lauderdale Exam #3: ADVANCED GENETICS Multiple choice (60 pts.) Please read these carefully . One and only one response (a, b, c, d, or e) completely and correctly answers the question, or completes the statement. Circle the appropriate response. Make sure your circle is unambiguous. 1. RNA polymerase is active in: a. translation b. replication c. Barr bodies d. all of the above e. none of the above 2. A gene can be defined as: a a chromosome b a unit particle of inheritance c a form of an allele d all of the above e none of the above 3. With probably 2,000 to 3,000 manatees left in Florida, UF-IFAS conservation geneticist Brian Bowen says that DNA fingerprints reveal dangerously low genetic diversity. While the genetic bottleneck is not as critical as the Florida panther, the survival of the manatee is vulnerable to a population crash, because of: a the likelihood of genetic drift b the danger of mutation c migration d all of the above e none of the above
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AGR 3303 - Genetics, University of Florida - Fort Lauderdale Page 2/10 4. There are no systems currently available for cloning RNA. To prepare probes for detection of plant viruses whose genome consists of RNA, phytopathologists resort to synthesizing and cloning DNA copies from viral RNA. Indicate which one of the following enzymes can be used to synthesize DNA copies from RNA templates. a. DNA polymerase I b. reverse transcriptase c. S 1 nuclease d. all of the above e. none of the above 5. Assume that a single gene has three alleles. In a diploid organism, how many possible genotypes are there? a. 2 b. 3 c. 4 d. 5 e. 6 6. Actual letter to Dear Abby (June 11, 1996): Recently a child in my husband's family was to undergo surgery. The child's mother asked all of the family members to donate blood. This child has A positive blood, and everyone in my husband's family except him also has A positive blood. My husband's blood type is O positive. I am convinced that the people he knows as his parents are not his biological parents. Do you think that the people he believes are his parents actually are? Or do you feel that he should confront them and ask for a DNA test? - Nameless in Arizona. Responding to Dear Nameless, Amy provided the following accurate advice: a. Yes, confront them. It's right thing. Clear the air. There's no way two parents with blood type A could have a child with blood type O. In fact, first tell your mother-in-law, then ask her to read Klug and Cummings if she hasn't already. b. No, let sleeping dogs lie. He obviously can't be their son, but they love one another so what does it matter? c.
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This note was uploaded on 07/30/2011 for the course AGR 3303 taught by Professor Gallio during the Fall '08 term at University of Florida.

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98ex3 - Student name AGR 3303 Genetics(120 pts total 30 Nov...

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