Recombinant DNA Technology
Plant transformation can be obtained by

using the E. coli bacterium to infect plant roots
infecting plants with a tobacco mosaic virus
shooting DNA into plant cells with a gun
combining plant and animal cells in culture

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Recombinant DNA Technology
A human cDNA library

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

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