Question

In case of lac operon, if two bacterial strains A1 and A2 with the genotypes Oc I+ Z‐ and O+ I‐ Z+ respectively, were used to produce mero-diploid daughter strain M, which one the following statements correctly predicts the expression of Z gene (β-galactosidase activity) in all the three strains (O+, I+ and Z+ denotes the wild type allele o the respective genes)

1 point

A1 - no expression; A2 - inducible expression; M- inducible expression

A1 - no expression; A2- constitutive expression; M-constitutive expression

A1- inducible expression; A2 - constitutive expression; M-inducible expression.

A1 - no expression; A2- constitutive expression; M - inducible expression

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Answer 1

Answer:

ok I will do that the answer is A1 - no expression; A2- constitutive expression;

Explanation:

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Answer 2

Answer:

1

Explanation:

in A1 operator is constitutive and repressor persent but b-galactosidase is absent so no expression of lac operon,In A2 repressor(lac I) is absent so lac operon express constitutively

In M(overall) both genotype persent repressor absent in p2 and operator is constitutive in p1 so overall it is inducible expression