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What would be the lac phenotype of an e. Coli cell with a nonsense mutation in the lacz coding region of the lac operon?.
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What would be the lac phenotype of an e. Coli cell with a nonsense mutation in the lacz coding region of the lac operon?.

User Cos
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Answer: Lac Negative

Step-by-step explanation:

A nonsense mutation produces a premature stop codon so the lacZ gene will not be able to produce a functional beta-galactosidase. If this is the case then the cell cannot break down lactose. If blue/white screening was done then this type of cell would remain a white colony.

User Simpu
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