The main chromosome of a bacterial cell possesses the following genotype with regard to the Lac operon: I- O+Z+Y- A- . This bacterial cell would
A)make LacZ independently of lactose.
B)make LacA in the presence of lactose.
C)make LacZ in the presence of lactose.
D)make no lac proteins.
E)make Lac Z and Lac Y in the presence of lactose.

Question

Quizplus · Accepted Answer

The I- mutation indicates a defective repressor, meaning the LacZ gene will be expressed regardless of lactose presence.

The Main Chromosome of a Bacterial Cell Possesses the Following