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What happens to the tetracycline resistance gene when a foreign DNA is ligated at the BamH I site?
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It gets inactivated
The recombinant plasmids will lose tetracycline resistance due to insertion of foreign DNA) The transformants growing on ampicillin containing medium are then transferred on a medium containing tetracycline. The recombinants will grow in ampicillin containing medium but not on that containing tetracycline.
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