When Griffith Experimented with Two Types of Streptococcus Pneumoniae, He

Question

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

Accepted Answer

Griffith's experiment demonstrated that the non-deadly strain could be transformed into a deadly strain when mixed with the heat-killed deadly strain, leading to the death of the mice. This suggested that some "transforming principle" from the dead deadly strain was taken up by the non-deadly strain, making it virulent.