The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of

Options

A. Inactivation of glycosidase enzyme in recombinant bacteria
B. Non-recombinant bacteria containing beta-galactosidase
C. Insertional inactivation of alpha-galactosidase in non-recombinant bacteria
D. Insertional inactivation of beta-galactosidase in recombinant bacteria

Answer

D