Arrange the following steps involved in Frederick Griffith experiment in correct order.
(A) When R-strain was injected into mice, the mice remained alive.
(B) When heat killed S-strain was injected into mice, the mice remained alive.
(C) The Streptococcus pneumoniae bacteria grown on a culture plate to produce the S and R strain
(D) When S-strain was injected into mice, the mice died.
(E) When heat killed S-strain + live R-strain was injected into mice, the mice died.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (C), (D), (A), (B), (E)
Streptococcus pneumoniae was grown as S and R strains (C). S strain killed mice (D); R strain did not (A); heat-killed S strain did not (B); heat-killed S with live R killed the mice (E).