After the dsDNA nucleic acid enter the nucleus of the host cell it is transcribed from host DdRp II to form 2 strands of mRNA complementary to the 2 DNA strands of the virus nucleic acid.
Does this process produce 2 complementary strands of mRNA that should match each other?
After the transcription each mRNA strand leaves the nucleus, but why those will not match to form a dsRNA and will not trigger the PTGS?