Selection incorrect statement.
Selection of recombinants due to inactivation of antibiotic is a cumbersome procedure.
Insertional inactivation of b galactosidase leads to colourless colonies.
Insertional inactivation of b galactosidase leads to blue color colonies.
In Insertional inactivation, the rDNA is inserted within the coding sequence of an enzyme b-galactosidase
Insertional inactivation caused due to gene z results in the formation of colorless or white colonies as the enzyme beta galactosidase is not formed.