Given below are two statements :

Statement I: In the lac operon, the z gene codes for beta-galactosidase which is primarily responsible for the hydrolysis of lactose into galactose and glucose.

Statement II: In addition to lactose, glucose or galactose can also induce lac operon.

In the light of the above statements, choose the correct answer from the options given below :

Recombinant DNA molecule can be created normally by cutting the vector DNA and source DNA respectively with:

The Bt toxin in genetically engineered Bt cotton kills the pest by:

Select the restriction endonuclease enzymes whose restriction sites are present for the tetracycline resistance (tet$$^{\mathrm{R}}$$) gene in the pBR322 cloning vector.