When Griffith Experimented with Two Types of Streptococcus Pneumoniae, He

question 23

Multiple Choice

When Griffith experimented with two types of Streptococcus pneumoniae, he found that:

• A)the deadly strain killed the mice, but the nondeadly strain did not.
• B)if the deadly strain was heat-killed before injection, the mice lived.
• C)if the nondeadly strain was mixed with the heat-killed, nondeadly strain before injection, the mice died.
• D)if the nondeadly strain was mixed with the heat-killed, deadly strain before injection, the mice died.

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