BIOL 121 (2010) Spring Exam 3

Briefly explain your reasoning 5 pts

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Unformatted text preview: revise your hypothesis. (5 pts) (C) A gray- eyed alien and her black- eyed husband want a white- eyed baby. Is this possible? (5 pts) 6 BIOL 121 Exam 2 04/26/2010 NAME: 12) a) A mutation in the lacI gene changes the fourth base in the lacI coding sequence, creating a nonsense mutation. From this information, can you determine whether the fourth base in the mutated coding sequence is A,T,G, or C? (Briefly explain your reasoning.)(5 pts) b) What effect will this mutation have on the ability of E. coli to metabolize lactose? (Briefly explain your reasoning.) (4 pts) c) You randomly mutate the beta- galactosidase gene (lacZ) and isolate lacZ mutations that have no effect on beta- galactosi...
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