Question

question 27
which of the following is incorrect?
viruses can be characterized by their nucleic acids.
some viruses mutate quickly.
some foodborne viruses can be characterized by the strain of the virus.
all viruses are characterized by their dna.

Explanation:

Viruses can have either DNA or RNA as their genetic material. So, not all viruses are characterized by DNA. The first three statements are correct facts about viruses - they can be characterized by nucleic acids (DNA or RNA), some mutate quickly, and food - borne viruses can be characterized by strain.

Answer:

All viruses are characterized by their DNA.