Which of the following statements about virus evolution are

Which of the following statements about virus evolution are true? Antigenic shift can lead to pandemic \"super bugs\" Antigenic drift results in small changes to a viral genome RNA viruses tend to evolve more slowly than DNA viruses. Viruses form a monophyletic group (i.e., they all share a single origin). Many viruses may have evolved from reduced cells or cellular components

Solution

All are true except first

1. It explains evolution in action through antibiotic resistance of bacteria.
2.Antigenic drift results in variation in viruses through accumulation of mutations within the genes.
3 RNA viruses show high rates of spontaneous mutation, but tend to evolve more slowly than directly transmitted viruses
4. The International Code of Virus Classification and Nomenclature defines a species as “a monophyletic group of viruses whose properties can be distinguished from those of other species by multiple criteria”
5. origin from primordial cells