DNA

The concept of individual inherited 'particles' was introduced

May 1, 1856

Gregor Mendel (1822-1884) introduced the concept of individual inherited 'Particles'. This 'particles' is called Genes!

Basic structure of DNA was introduced

Jan 4, 1900

The basic structure of DNA was introduced and it was found that it had four variations in the bases

Destroy different types of molecules

Dec 31, 1949

Oswald Avery, Colin Macleod and Maclyn McCarty destroyed different types of molecules to see if this affected the inherited change in bacteria. (This was in the late 1940s and early 1950s)

Analysing the DNA

Mar 2, 1951

Erwin Chargaff analysed the DNA, and found that the proportion of cytosine and guanine were the same and the proportion of adenine and thymine was the same too! This is what Erwin Chargaff discovered.

Deducing the structure

Apr 1, 1953

James Watson and Francis Crick manipulated Wilkins into giving them the details of the experiment of the DNA. Wilkins gave them the detailed measurements which Rosalind franklin obtained (without her permission). This is how they build the structure of the double helix.

X-ray diffraction of DNA

May 4, 1953

Maurice Wilkins (1916-2004) and Rosalind Franklin (1920-1958) were working on the X-ray diffraction of DNA. There were intense rivalry developed between Wilkins and Franklin.