Retroviruses insert their genomes into those of their hosts.Which statement best describes a scenario that relates to this characteristic?
A) Some DNA viruses may have evolved from reduced cellular organisms.
B) Retroviruses are only known to infect vertebrates.
C) DNA from proviruses can provide a record of ancient viral infections that plagued human ancestors.
D) Some retrovirus sequences code for bacteria.
E) Some retrovirus sequences code for bacteriophages.

Question

Quizplus · Accepted Answer

Retroviruses insert their DNA into the host's genome, forming a provirus. This provirus remains in the host's genome for the lifetime of the infected cell and its progeny, and thus can serve as evidence of ancient viral infections in humans and other organisms.

Retroviruses Insert Their Genomes into Those of Their Hosts