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    Exam 14: Regulation of Gene Expression in Bacteria and Bacteriophages
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    Which of These Haploid Strains Produces Permease but Does Not
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Which of These Haploid Strains Produces Permease but Does Not

Question 41

Question 41

Multiple Choice

Which of these haploid strains produces permease but does not produce β-galactosidase?


A) I - P+ O+ Z+ Y+
B) I+ P+ O+ Z - Y+
C) I - P+ O+ Z - Y -
D) I+ P+ O - Z+ Y+
E) I - P+ O+ Z+ Y -

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