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

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

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Transgenic Plant
Transplastomics

offers little opportunity for practical use
produces genes that are released in pollen
provides exceptionally low yields of protein products
targets genes in the chloroplast

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

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

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