07_Final.partI.Key

07_Final.partI.Key - EEMB 129 FINAL EXAM 2007 Name_ Perm #_...

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EEMB 129 FINAL EXAM Name____________________________ 2007 Perm #___________________________ 1 Read each question carefully before you answer it. Make sure that you show your work. 1. (6 pts) In Drosophila , forked (f) bristles are recessive to normal (f + ) and glassy eyes (g) are recessive to normal (g + ). The genes are not linked. If a homozygous wild-type male is mated to a forked bristle, glassy eye female, predict the genotypes and phenotypes of the F 1 . f + f + g + g + x ff gg f + f g + g normal bristles and normal eyes 2. (5 pts) If an F 1 female from the cross above were crossed to its male parent, predict the genotypes and phenotypes of the offspring. f + f g + g x f + f + g + g + f + f + g + g + all normal bristles and normal eyes f + f + g + g f + f g + g + f + f g + g 3) Two true-breeding white-flowered strains of the plant morning glory were mated and the F 1 progeny were all white-flowered. When the F 1 plants were allowed to self-fertilize, 130 white-flowered and 30 purple-flowered F 2 plants grew. (12 pts) a) Describe the inheritance of flower color. (6 pts) Show the genotypes of the P, F 1 generations and the genotypic classes of the F 2 generation. Also show the phenotypes of all generations. P AABB x aabb -> F1 AaBb F2 A-B- white white white white A-bb purple aaB- white aabb white b) A white F 2 plant is allowed to self-fertilize. Of the progeny, 3/4 are white flowered and 1/4 are purple flowered. What is the genotype of the white F
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07_Final.partI.Key - EEMB 129 FINAL EXAM 2007 Name_ Perm #_...

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