Match the scientist(s) with their key experiment or discovery.
| Column I | Column II |
|---|---|
| (a) Griffith | (i) Proved that DNA is the genetic material using bacteriophages |
| (b) Hershey and Chase | (ii) Proposed the semi-conservative model of DNA replication |
| (c) Meselson and Stahl | (iii) Conducted experiments on Streptococcus pneumoniae (transforming principle) |
| (d) Watson and Crick | (iv) Proposed the double-helix model of DNA |