When Griffith experimented with two types of Streptococcus pneumoniae, he found that if the
A) deadly strain was heat-killed before injection, the mice died.
B) non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice died.
C) non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice lived.
D) non-deadly strain was mixed with the heat -killed, non-deadly strain before injection, the mice died.

Question

Quizplus · Accepted Answer

Griffith's experiment demonstrated that when the non-deadly strain of Streptococcus pneumoniae was mixed with the heat-killed, deadly strain and injected into mice, the mice died. This suggested that the non-deadly strain had been transformed into a deadly strain by some factor from the dead bacteria, leading to the discovery of the phenomenon known as transformation.

When Griffith Experimented with Two Types of Streptococcus Pneumoniae, He