Questions
Lactose cannot induce the expression of the following gene.
a
lac i
b
lac a
c
lac z
d
lac y
detailed solution
Correct option is A
Lactose can induce the expression of structural genes of lac operon such as z,y and a. by preventing the binding of repressor to operator. Gene i is constitutive and expressed all the time and there is formation of repressor irrespective of lactose presence or absence.Talk to our academic expert!
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Number of regulatory and structural genes present in lac operon are
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