Who Has Discovered the Dna Structure ?

Only available on StudyMode
  • Download(s) : 126
  • Published : January 29, 2013
Open Document
Text Preview
Who Really Discovered The DNA Structure?
The DNA is greatly famous for its origin of hereditary power. It has contributed to various parts of the scientific fields. The major discovery of DNA has led to the curing of certain diseases as well. However, after learning about its outstanding effects on science, the question becomes: who has discovered the DNA? Usually, the answer is Watson and Crick with their famous picture of them standing next to a large model of the DNA structure. The next question usually, is how did they discover such a microscopic model? It all comes back to, me, Rosalind Franklin.

I was born in July, 1920, and had graduated with a Ph.D. from Cambridge University in 1945. I was training to be a chemist and worked at my best until I have mastered the structure of graphite and other carbon compounds as well. Afterwards, I was employed as a research associate, in 1951, for John Randall at King’s College in London. In King’s College, I met James Watson and Francis Crick, who were working toward learning about the DNA structure and its components. I was working with Maurice Wilkins on the DNA also.

While working on the DNA and trying to know its properties, it was revealed to me that the DNA could crystallize into two different forms: an A form and a B form. Other chemists assisted me; John Randall provided me with A form while Wilkins gave me the B form. Wilkins and I hoped to arrive at the DNA’s molecular structure via the X-ray crystallography. With this method, a crystal is exposed to x-rays with the aim of producing a diffraction pattern. If the crystal is pure enough and the diffraction pattern is obtained very carefully, it is probable to recreate the arrangements of the atoms in the molecules that consist of the basic unit of the crystal called the unit cell.

During the early 1950s, scientists were just studying how to use this technique for biological molecules as complex as the DNA. Usually, when most chemists mix both forms...
tracking img