RNA VIRUS MUTATION RATE. “Given a typical RNA viral genome of 10,000 bases, a mutation frequency of 1 in 10,000 corresponds to an average of 1 mutation in every replicated genome. If a single cell infected with poliovirus produces 10,000 new virus particles, this error rate means that in theory, about 10,000 new viral mutants have been produced. This enormous mutation rate explains why RNA viruses evolve so readily.”
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