Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

تمرين 8

What effect would the presence of lactose have on a lac operon
A) The repressor would bind to the operator site of the operon.
B) Lactose will bind to the operator site of the operon.
C) The lac operon would be transcribed.
D) It would have no effect.