Transgenic Plant
What are the various disadvantages of cross protection?

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

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

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

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Transgenic Plant
Which of the following has been widely used to provide resistance against plant viruses?

Virus resistance genes from bacteria
Expression of ribonuclease (RNase) genes in host plants
Expression of virus coat protein genes in transgenic plants
Expression of anti-virus genes in vectors that transmit viruses

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