Molecular Basis of Inheritance Question 139
139. What does “lac” refer to in what we call the lac operon?
(a) The number $1,00,000$
(b) Lactose
(c) Lactase
(d) Lac insect
Show Answer
Answer : b
Hints & Solution
(b) Lactose operon in E.coli is a catabolic pathway in which the structural genes remain switched off unless the inducer (Lactose) is present in the medium.
