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When RNA from strain A of TMV is mixed with coat protein from strain B, the...

When RNA from strain A of TMV is mixed with coat protein from strain B, the reassembled virions are infectious, giving rise to strain A virus particles in the infected tobacco cells. Why?

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Answer #1

Strain specific assembly of TMV in vivo is due to RNA and not due to coat protein and that is why reassembled virus sare giving rise to A strain virions as RNA Is of A strain and it is mixed with coat protein of stain B so it won't make B virions unless and until the RNA is from B strain.

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