1. DNA History

2. Friedrich Miescher 1885 Isolated material from inside the nucleus
Named it “nuclein”

3. Oswald Avery
1944 – showed that DNA is the hereditary material through experimentation

4. Hershey & Chase
1952
Confirmed Avery’s findings that DNA is the hereditary material through experiments with viruses

5. Phoebus Levine Determined nucleotide structure
Found that nucleotides link into long chains

6. Erwin Chargaff
1949
Found that A = T and C = G

7. Maurice Wilkins & Rosalind Franklin
Took x-ray pictures of DNA
DNA is a helix
Gave measurements for the molecule

8. Watson & Crick
Were the first to combine findings if the other scientists for the correct structure of DNA