Question

In Griffith experiment, what would be the effect of the following conditions on the mice?
Form of Pneumococcus and Effect on Mice Injected
I. Live, rough non-capsulated A
II. Live smooth capsulated B
III. Heat-killed smooth C
IV. Heat-killed smooth + live rough D
Choose the correct option for their effect on mice.

• A. A-Survived, B—Died, C—Died, D-Survived
• B. A-Survived, B—Died, C- Survived, D—Died
• C. A- Died, B- Survived, C-Survived, D-Died
• D. A-Died, B-Survived, C—Died, D-Died

Answer 1

The correct option is B A-Survived, B—Died, C- Survived, D—Died

Live, rough non-capsulated A $\to$ The mice survived
Live smooth capsulated B $\to$ the mice died
Heat-killed smooth C $\to$ the mice survived
Heat-killed smooth + live rough $\to$ the mice died.