Q. Double-stranded RNA viruses - how do they replicate?

[robotnick]

Do they possess an unzipping enzyme which is released when the coat is removed?

[stopherlogic]

http://en.wikipedia.org/wiki/Double-str ... NA_viruses

Not sure, possibly a polymerase or reverse transcriptase is all that is needed, seems like there are various different methods of replication depending on which family of dsRNA virus you are talking about.