Determine the appearance for northern blots of the bacteria listed below. in each case, lane 1 is for mrna isolated after growth in a glucose-containing (minimal) medium, and lane 2 is for mrna isolated after growth in a lactose-only medium.

a. lac+ bacteria with the genotype i+p+ocz+y+

b. lac- bacteria with the genotype i+p+o+z−y+

c. lac- bacteria with the genotype i+p−ocz+y+

d. lac+ bacteria with the genotype i−p+ocz+y+

e. lac- bacteria with the genotype i+p+ocz−y− f. lac- bacteria with the genotype i+p+o+z+y+ and a mutation that prevents cap-camp binding to the cap site