When a mixture of live nonvirulent bacteria and dead virulent bacteria was injected into mice,Griffith unexpectedly found that the injected mice died.He explained this result by suggesting that the nonvirulent bacteria are being

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Griffith's observation that the mixture of live nonvirulent bacteria and dead virulent bacteria resulted in the death of the mice suggests that something transformed the nonvirulent bacteria into a virulent form. This phenomenon became known as transformation, and it led to the discovery of DNA as the genetic material.

When a Mixture of Live Nonvirulent Bacteria and Dead Virulent