Question
Question: Griffith’s experiments showing the transformation of R strain pneumococcus bacteria to S strain pneu...
Griffith’s experiments showing the transformation of R strain pneumococcus bacteria to S strain pneumococcus bacteria in the presence of heat-killed S strain bacteria gave evidence that
A
An external factor was affecting the R strain bacteria
B
DNA was definitely the transforming factor.
C
S strain bacteria could be reactivated after heat killing.
D
All of the above
Answer
An external factor was affecting the R strain bacteria