Which Phenotype Would Be Observed in an E

question 35

Multiple Choice

Which phenotype would be observed in an E.coli cell with the lacY-genotype?

• A)Cells would not be able to accumulate lactose due to the absence of the lactose permease membrane protein.
• B)Cells would not be able to accumulate lactose due to the presence of a defect in the β-galactosidase gene.
• C)Cells are unable to cleave an indicator molecule even if lactose is available as an inducer.
• D)Cells are able to cleave an indicator molecule even if lactose is absent as an inducer.

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