Question

1.

A lac operon of genotype lacI- lacP+ lacO+ lacZ- lacY+ will produce b-galactosidase AND permease when

	lactose is present
	lactose is absent
	in the presence OR absence of lactose
	when glucose is present
	never

2. A lac operon of genotype lacI+ lacP+ lacO+ lacZ+ lacY- will produce b-galactosidase BUT NOT permease when

	lactose is present
	lactose is absent
	in the presence OR absence of lactose
	when glucose is present
	all of the above