The chain reaction in the discovery of DNA

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Fredrick Meischer

1869

First to isolate DNA, no one believed him and they thought he was wrong.

Fred Griffith

1928

Showed how cells can be transformed due to DNA.

Beadle and Tatum

1941

Showed how genes directed the enzymes that control the metabolic process.

Erwin Chargaff

1944

He found that The number of adenine was equal to the number of thymine and the number of guanine was equal to the number cytosine.

Avery and McCloed

1944

They thought that DNA was responsible for transformation in cells.

Maurice Wilkins

1950

Helped Watson and Crick find the structure of DNA.

Watson and Crick

1953

discovered structure of DNA.

Rosalind Franklin

1953

Took the X-ray photos that Watson and Crick used to discover the double helix.

Marshall Ninrenburg

1961

He discovered that DNA was a molecule of genetic information.