Negative-sense single-stranded RNA viruses are thought to have arisen many times independently because
A) they have only a few genes.
B) they have diverse capsid morphology.
C) they cause many human diseases including measles,mumps,and rabies.
D) their nucleotide sequences suggest that the different viruses are not closely related.
E) there are no known fossils.

Question

Quizplus · Accepted Answer

The nucleotide sequences of negative-sense single-stranded RNA viruses indicate that they are not closely related, suggesting multiple independent origins.

Negative-Sense Single-Stranded RNA Viruses Are Thought to Have Arisen Many