In context to lac operon, if two bacterial strains P1 and P2 with the genotypes \(\mathrm{O}^{\mathrm{C}} \mathrm{I}^{+} \mathrm{Z}^-\) and \(\mathrm{O}^{+} \mathrm{I}^{-} \mathrm{Z}^{+}\) respectively, were used to produce mero-diploid daughter strain D, which one of the following statements correctly predicts the expression of Z gene (β-galactosidase activity) in all the three strains? (O+, l+ and Z+ denote the wild type allelle of the respective genes).
1
P1 No expression; P2 - constitutive expression; D - Inducible expression.
2
P1 - No expression; P2 - constitutive expression; D - constitutive expression.
3
P1 - No expression; P2 - Inducible expression; D - Inducible expression.
4
P1 - Inducible expression; P2 constitutive expression; D - Inducible expression.
5
Question Not Attempted