A Partial Diploid Containing a Wild Type Allele for LacI

question 11

Multiple Choice

A partial diploid containing a wild type allele for lacI and a lacI mutant that was unable to bind the inducer would:

• A) always show low levels of β-galactosidase gene expression.
• B) show normal induction in the presence of an inducer.
• C) express β-galactosidase at all times.
• D) only show normal induction in the presence of an inducer in the absence of glucose.
• E) show induction in the presence of an inducer in the presence of glucose.

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