I: | Griffith discovered the process of bacterial transformation. |
II: | Hershey and Chase unequivocally proved that DNA is the genetic material. |
III: | Meselson and Stahl showed that DNA replicated semi-conservatively. |
1. | Only I and II are correct |
2. | Only I and III are correct |
3. | Only II and III are correct |
4. | I, II and III are correct |