lac operon: synthesizes proteins for the metabolism of lactose (lac genes)
• when lactose and glucose are present, lac genes are not expressed
• when only lactose is present, lac genes are expressed
A lac operon of genotype lacI– lacP+ lacO+ lacZ+ lacY+ will produce β-galactosidase AND permease when
A. glucose is present.
B. lactose is present or not.
C. lactose is absent.
D. lactose is present.
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Based on our data, we think this problem is relevant for Professor Dawson & Nunnari's class at UCD.