Final answer:
Key figures like Avery, Griffith, Hershey & Chase, Chargaff, Franklin, and Watson & Crick played crucial roles in DNA history.
Explanation:
Role of Key Figures in DNA History:
- Avery: Demonstrated DNA as genetic material in 1944.
- Griffith: Provided initial hint of DNA's importance.
- Hershey & Chase: Confirmed DNA as genetic material in 1952.
- Chargaff: Discovered base pair ratios.
- Franklin: Played role in DNA structure discovery with Watson & Crick.
- Watson & Crick: Proposed DNA double helix model in 1953.
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