NEET BIOLOGY

Detailed explanation-1: -To create new virions, the proteins that will be incorporated into the virion are made through expression of viral genes, and the virus genome is copied through the process of replication. The replication strategy of a virus is generally dependent upon the type of nucleic acid genome it contains (Fig. 4.7 ).

Detailed explanation-2: -In general terms, virus replication involves three broad stages which are present in all viruses: initiation of infection, replication and expression of the genome, and the release of mature virions from the infected cell.

Detailed explanation-3: -The replication cycle of all viruses involves three key phases: initiation of infection, genome replication and expression, and finally, egress or release of mature virions from the infected cell.