Griffith was able to distinguish two strains of pneumococcus by means of
A) the appearance of their colonies in culture.
B) their different rates of replication in culture.
C) a difference in size.
D) a difference in color.
E) a difference in the temperatures required to kill them.

Question

Quizplus · Accepted Answer

Griffith was able to distinguish the two strains of pneumococcus by their appearance in culture. One strain produced smooth colonies, while the other produced rough colonies.

Griffith Was Able to Distinguish Two Strains of Pneumococcus by Means