Zoology - Biotechnology - Principles and Processes Question with Solution | TestHub

Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure. Therefore, alternative selectable markers have been developed which differentiates recombinants from non recombinants on the basis of their ability to produce colour. A recombinant DNA ia inserted within the coding sequence of enzyme β-galactosidase, this results in insertational inactivation and the colonies do not produces any colour.