What was the Most Significant Conclusion of Griffith's Experiments with Pneumonia

Question

What was the most significant conclusion of Griffith's experiments with pneumonia in mice?
A) Mice exposed to the S- strain bacterium became resistant to the R- strain bacterium.
B) Heat destroys the hereditary material.
C) The genetic material was definitively proven to be DNA.
D) There is a substance present in dead bacteria that can cause a heritable change in living bacteria.
E) S- strain bacteria can cause pneumonia.

Accepted Answer

Griffith's experiments demonstrated that a substance from dead S-strain bacteria could transform living R-strain bacteria into virulent S-strain, suggesting the presence of a "transforming principle" that could transfer genetic information.