Sample Exam One

Sample Exam One - BioS220 SAMPLE Exam I _ _ Last name,...

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BioS220 SAMPLE Exam I Page 1 ____________________ ______________________ ______________ Last name, first name Social Security Number TA BIOS220 HOUR EXAM I SEPTEMBER 1998 INSTRUCTIONS Before you begin please WRITE YOUR NAME ON EVERY PAGE. This exam consists of 8 questions worth a total of 100 points. Read over the exam, checking that you have all the questions, and budget your time accordingly. Show all work. Answers must be confined to the corresponding question page since the pages will be separated for grading. For that reason it is also imperative that your name be written on every page. Question # Maximum points Points earned 1 12 2 15 3 15 4 7 5 12 6 20 7 9 8 10 Total
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BioS220 Sample Exam I Page 2 ____________________ ______________________ ______________ Last name, first name Social Security Number TA 1. (12 pts) Draw a cartoon showing meiotic metaphase I for an organism where 2N=2. Be sure to label centromeres, sister chromatids, and homologs.
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BioS220 SAMPLE Exam I Page 3 ____________________ ______________________ ______________ Last name, first name Social Security Number TA 2. A trihybrid AaBbDd is selfed. All loci are autosomal and unlinked. The phenotypes associated with AA and Aa are identical, and differ from the aa phenotype. Likewise the phenotypes associated with BB and Bb are identical, and differ from the bb phenotype. The Dd and dd phenotypes differ, while organisms that inherit two copies of the D allele die before birth. a. (5 pts) What proportion of the viable progeny will be phenotypically identical to the parents? b. (5 pts) What proportion of the viable progeny will be phenotypically different from
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Sample Exam One - BioS220 SAMPLE Exam I _ _ Last name,...

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