Viruses May Rapidly Evolve Resistance to Vaccines and Medications by Modifying

Multiple Choice

Viruses may rapidly evolve resistance to vaccines and medications by modifying their DNA; what mechanism(s) do they use?

A) Dying viruses burst open, and another virus can take up the released DNA.
B) Adjacent viruses form a conjugation tube and exchange DNA laterally.
C) Viral DNA replication is sloppy; random DNA variations often result in viral proteins that reduce the effectiveness of current treatments.
D) One virus can produce enzymes that change the DNA of another virus.