MCB164+S08+ICE+4+KEY

MCB164+S08+ICE+4+KEY - A B D A B d A B D A b d A B d A B D...

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MCB164 S08 Names of group members:____________________________ May 8, 2008 In class exercise #4 _____________________________ Score: _____KEY_____ _____________________________ Consider the tetrads resulting from the cross of haploid budding yeast strains with the following genotypes: A B D and a b d . Under each tetrad, mark the letter that corresponds to the description that best describes the recombination event (s) leading to each of the five patterns. Assume mismatch corrections always occur in favor of the dominant allele defined as an uppercase letter. There is only one correct answer per tetrad. A B D A B D
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Unformatted text preview: A B D A B d A B D A b d A B d A B D A b d A b D a B D a B D a b d a B D a B d a b d a b d a b d a b D a b d ____B_____ ___C______ ___A_____ ____F_____ ____D_____ A. No detectable event B. Single crossover between A and D (no gene associated gene conversion at b) C. Single crossover between A and D (with associated gene conversion at b) D. Two-strand double crossover involving intervals A B and B D (no gene conversion at b) F. Four-strand double crossover between A and D (no associated gene conversion at b) G. Four-strand double crossover between A and D (with associated gene conversion at b)...
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