Common Properties for virus classification Virion morphology Nature of genome in virion Presence or absence of lipid membrane (envelope) Genome organization and replication Antigenic properties Biological propertiesCommon Properties for Virus Classification ¾ Virion morphology ¾ Nature of genome in virion Nature of genome in virion ¾ Presence or absence of lipid membrane (envelope) ¾ Genome organization and replication ¾ Antigenic properties ¾ Biological properties Biological properties