Question

There are _______ families of RNA-containing viruses that infect vertebrates.

A) two
B) five
C) seven
D) fourteen

Answer 1

There are seven families of RNA-containing viruses that infect vertebrates and a virus with a linear RNA genome and helical capsid is likely a member of family D according to the reference materials.

Step-by-step explanation:

There are seven families of RNA-containing viruses that infect vertebrates. According to the provided reference materials, when a scientist discovers a new virus with a linear, RNA genome surrounded by a helical capsid, this virus is most likely a member of family D, based on the structure classification provided in Chapter 6, Question 8. The Baltimore classification system groups viruses into families based on their route of mRNA production and genome type, and there are multiple families of RNA viruses that infect vertebrates, each with unique characteristics and replication mechanisms.

Answer 2

Answer: B) five.

Step-by-step explanation:

B) five.

There are five families of RNA-containing viruses that infect vertebrates. These families are Flaviviridae, Orthomyxoviridae, Paramyxoviridae, Retroviridae, and Rhabdoviridae. Each family includes various viruses with distinct characteristics, and these RNA viruses play a significant role in causing diseases in vertebrates. Understanding these families helps in classifying and studying the diverse range of RNA viruses affecting animals.