DNA TIMELINE

P. A. Levene

Dec 11, 1909

P. A. Levene Charecterized the differences between DNA and RNA

Frederick Griffith

Jan 11, 1928

Frederick Griffith's Griffith experiment discovered a bacterial transformation. Later attributed to DNA

Oswald Avery

Dec 11, 1943

DIscovered that DNA contains genes

erwin chargaff

Dec 12, 1950

Erwin Chargaff discovered that the amounts of adenine and thymine are roughly the same, as were the amounts of cytosine and guanine

Rosalind Franklin

Jan 12, 1951

Franklin used X-Ray diffraction to see DNA images. This led to the discovery of the DNA double helix

Hershey and Chase

Dec 11, 1952

helped prove that DNA is the hereditary