The following are two genotypes of the lactose operon in E. coli:
1) I+ P+ Oc Z+ Y+
"2) I- P+ O+ Z+ Y+
Do either of these genotypes produce -galactosidase and permease in the absence of lactose?"
A) Both produce -galactosidase and permease.
B) Neither produces -galactosidase and permease.
C) The first one produces -galactosidase and permease; the second does not.
D) The first one does not produce -galactosidase and permease; the second does.
Correct Answer:
Verified
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