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PS 1 - BICD100 Winter 2008 Problem Set 1 Note this problem...

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Note: this problem set covers material from Lectures 1-4. I have included only 1 chi squared problem--there are many more in the textbook to practice on. 1. Gregor Mendel’s less well-known brother Fritz also performed some pioneering experiments on heredity in Pisum sativum . Fritz Mendel crosses a round yellow pea plant with a wrinkled green pea plant. Fritz counts up the F1 peas and gets the following results: 470 round yellow : 467 wrinkled yellow. State the likely genotypes of the parents and the F1 progeny classes. Fritz then takes one of the F1 wrinkled yellow seeds and allows it to grow and self to give the F2 generation. What do you predict he should see in the F2 self progeny, and why? 2. As a keen amateur geneticist and much to the dismay of your housemates you maintain a colony of mice. The normal ‘wild type’ mouse has 5 toes per paw. You find an unusual variant mouse with six toes on each paw. When this six-toed mouse is crossed with a wild type male mouse, its F1 progeny consist of four six-toed mice and three five-toed mice.
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