Transgenic Plant
Insect resistance in the transgenic plant has been achieved by

transferring genes for Bt toxins
All of these
transferring genes for other insecticidal secondary metabolities
transferring genes for protease inhibitors

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Transgenic Plant
Cross protection against viruses in transgenic plants can be obtained by

any of the above
inoculating the susceptible strain with the coat proteins of virulent strain
inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
inoculating the susceptible strain with genes of nucleocapsid

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