AIPMT 2013 Biology Solved Paper

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Question : 18 of 90

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

Inactivation of glycosidase enzyme in recombinant bacteria
Non-recombinant bacteria containing beta galactosidase
Insertional inactivation of alpha-galactosidase in non-recombinant bacteria
Insertional inactivation of alpha-galactosidase in recombinant bacteria

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