which of the following would be the first step in biosynthesis of a virus with a - (minus) strand of rna? which of the following would be the first step in biosynthesis of a virus with a - (minus) strand of rna? synthesis of double-stranded rna from a dna template synthesis of double-stranded rna from an rna template synthesis of dna from an rna template transcription of mrna from dna synthesis of dna from a dna template