Aplasmid contains the gene for tetracycline resistance and a lacz gene that has a restriction site in it. foreign dna has the same restriction site at its ends. host bacteria are transformed with the recombinant dna and grown on medium with tetracycline and x-gal. colonies that are capable of growing on this media and turn blue are carrying group of answer choices only the lacz gene foreign dna that has been inserted into the plasmid the intact plasmid foreign dna the normal bacterial genome