geneticist uses a plasmid for cloning that has the lacZ gene and a gene that confers
resistance to penicillin. The geneticist inserts a piece of foreign DNA into a restriction site that is
located within the lacZ gene and uses the plasmid to transform bacteria. Explain how the
geneticist can identify bacteria that contain a copy of a plasmid with the foreign DNA
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Recombinant DNA will not show the original blue colour, due to insertional inactivation of beta galacto oxidase. The recombinant will show colourless appearance after ligation of foreign DNA.
hope this will help you
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