Transgenic Plant
What are the various disadvantages of cross protection?

Possibility of unnecessary spread of mild virus
Possibility of mutations in inducing mild virus strain
All of these
Possibility of synergism between inducing virus and other unrelated virus

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Transgenic Plant
Expression of antisense RNA in transgenic plants is a general method used to

reduce or eliminate the expression of individual genes
activate the expression of all genes in a biochemical pathway
eliminate the expression of all genes in a biochemical pathway
block the expression of virus coat protein genes

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

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