In His Transformation Experiments, What Did Griffith Observe

question 26

Multiple Choice

In his transformation experiments, what did Griffith observe?

• A) Mutant mice were resistant to bacterial infections.
• B) Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form.
• C) Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic.
• D) Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.
• E) Mice infected with a pathogenic strain of bacteria can spread the infection to other mice.

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