Chapter 12, Problem 22P

Suppose the lac operon partial diploid ${\text{cap}}^{\text{-}}{\text{I}}^{\text{+}}{\text{P}}^{\text{+}}{\text{O}}^{\text{+}}{\text{Z}}^{\text{-}}{\text{Y}}^{\text{+}}{\text{/cap}}^{\text{+}}{\text{I}}^{\text{-}}{\text{P}}^{\text{+}}{\text{O}}^{\text{+}}{\text{Z}}^{\text{+}}{\text{Y}}^{\text{-}}$ is grown.

a. Will this partial diploid strain grow on a lactose medium?

b. Is transcription of $\text{β-}$ galactosidase and permease inducible, constitutive, or noninducible?

c. Explain how genetic complementation contributes to the growth habit of this strain.