DNA timeline

PA Levene - Nucleotides

Dec 11, 1920

wikipediaStudied the structure and function of nucleic acid. Characterized different forms of nucleic acids. Characterized DNA from RNA. Found out DNA contained adenine, guanine, thymine, cytosine, deoxyribose and a phosphate group.

Linus Pauling

Dec 11, 1920

wikipedia American chemict, biochemist, peace activist, author, and educator. Founders of the fields of quantum chemistry and molecular biology.

Frederick Griffith

Apr 17, 1928

Conductor of the first major experiment that led to the discovery of DNA.
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Oswald Avery

Oct 21, 1944

timeline idetifyed the molecule that transformed the R strain of bacteria into the S strain. Isolated many different molecules.

James Watson- DNA sructure

Sep 25, 1950

timeline Came up with the structure for DNA. Fasinated by the idea that genes and chromosomes hold the secrets of life. Wrote "The Double Helix: A Personal Account on the Discovery of the Structure of DNA"

Erwin Chargaff

Dec 11, 1950

Wikipedia Discovered two rules that helped lead to the discovery of the double helix structure of DNA.

Maurice Wilkins

Dec 11, 1950

Wikipedia Research contributed to the development of radar. Worked on the structure of DNA.

Hershey and Chase

Dec 11, 1952

timeline Conducted experiment that proved phage DNA was the genetic material.

Rosalind Franklin - X-ray diffraction

Mar 17, 1953

timeline Produced the X-Ray crystalolography pictures of BDNA. Took images of DNA fibers. Solved the structure of DNA.

Francis Crick- DNA structure

Dec 11, 1953

timeline Studied X-Ray diffraction of proteins.