Question
General Biology Question on Concepts and regulation of metabolism of carbohydrates
Which of the following conditions induce(s) the expression of B-galactosidase gene in the lac operon?
A
Absence of glucose
B
Absence of lactose
C
Presence of glucose
D
Presence of lactose
Answer
Absence of glucose
Explanation
Solution
The correct option is (A):Absence of glucose ,(D):Presence of lactose