A laboratory technician is analyzing the replication cycle of a +ssRNA virus. She notes that the virus produces a complementary negative-sense RNA (-ssRNA) strand during its replication. What is the role of the -ssRNA strand in the replication cycle of a + ssRNA virus? a. It serves as a template for protein synthesis b. It serves as a template for the synthesis of new + ssRNA genomes c. It integrates into the host genome d. It forms the viral envelope