14.1 Structure and Classification of Animal Viruses

1. Phages and animal and plant viruses are nucleic acid surrounded by a protein coat, the capsid. Many animal viruses have an additional covering, an envelope, a lipid bilayer similar to the plasma membrane of the host. (Figure 13.2)

2. Animal and plant viruses containing more than one RNA molecule are segmented viruses.

Classification of Animal Viruses

1. The criteria for classifying animal viruses are genome structure, particle structure, and the presence or absence of a viral envelope. (Tables 14.1,14.2)

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