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Can viruses adapt by natural selection?
A. No, because there isn't a genetic basis for inheritance between parent and offspring virus particles.
B. No, because there isn't a way to distinguish more fit from less fit virus particles
C. Yes but only via human (domestic/artificial) selection
D. No they evolve by mutations.
E. Yes, virus particles that are most successful successful in reproducing quickly and infecting other host cells are the best adapted.
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