Recombinant DNA Technology
The transfer of antibiotic-resistant genes from genetically engineered bacteria to disease-causing bacteria __________ .

has occurred
can never occur
would be of no concern if it occurred.
seems unlikely

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Recombinant DNA Technology
A human cDNA library

contains DNA for specific human proteins
contains DNA for virtually all of the human proteins in vectors
None of these
cannot be used to obtain human genes because it would be radioactive

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