Question

Griffith's experiment 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. AII of the abov

Answer 1

Answer: (A)

Correct answer is (a) an external factor was affecting the R strain bacteria