The Baltimore Classification System Places Viruses into __________ Groups

Question

The Baltimore classification system places viruses into __________ groups.
A)four
B)five
C)seven
D)nine

Accepted Answer

The Baltimore classification system places viruses into seven groups based on the type of genome and how mRNA is synthesized during the viral replication cycle. These seven groups include: DNA viruses, RNA viruses with double-stranded genomes, RNA viruses with single-stranded genomes that function as mRNA, RNA viruses with single-stranded genomes that are (-) sense and require a complementary RNA strand for replication, RNA viruses with single-stranded genomes that are (+) sense and require no complementary RNA strand, RNA viruses with single-stranded genomes that are retroviruses, and DNA viruses that replicate through an RNA intermediate.