Chemical Element

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by MorganKeithClinton
Last updated 3 years ago

Discipline:
Science
Subject:
Chemical Elements

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Chemical Element

FACTSborn: Notting Hill, London, UKJuly 25, 1920Died:Chealsea, London, UKApril 16, 1958Education: University of Cambridge, Newnham college, and St.Paul's Girls SchoolLoved to travelling and had love for mountainsIs best known for X-ray diffraction images that led to the discovery of the DNA double helix

Rosalind Franklin

Rosalind Franklin made a crucial contribution to the discovery of the double helix structure of DNA, but some would say she got a raw deal. She was also known for Photograph 51, became famous as critical edvidence in identifiying the structure of DNA.

.In early life Franklin did very well in science and physics. She attended St.Paul's Girls School and was very talented in science and physics. She attended Newnham college in 1938 through 1941. She gained her degree of Philosophy from Cambridge in 1945.

Franklin recieved her education at multiple schools the main ones being St.Paul Girls School, Newnham college, and University of Cambridge. She studied chemistry and got her Bachlor's degree at the time for employment qualfications.

In January 1951, Franklin began research at King's College London in the biophysics unit, where director John Randall used her expertise and x-ray diffraction techniqes(proteins and lipids in solutions) on DNA fibers. Studying DNA with X-ray diffraction, Franklin and her student Raymond Gosling made an amazing discovery: they took pictures of DNA and found out their was two forms of DNA type A "dry" and type B "wet".

Reseacrh &Discovery

Credit

Education

Impact on science

Early Life

John Desmond Bernal, one of the United Kingdom's most well-known and controversial scientists and a pioneer in X-ray crystallography, spoke highly of Franklin around the time of her death in 1958. "As a scientist Miss Franklin was distinguished by extreme clarity and perfection in everything she undertook," he said. "Her photographs were among the most beautiful X-ray photographs of any substance ever taken. Their excellence was the fruit of extreme care in preparation and mounting of the specimens as well as in the taking photographs." Her partner Wilkins disclosed her photo 51 to a competing scientist James Watson who won a Nobel Prize in 1962.

This is the X-ray crystallograph pattern of DNA obtained by Rosalind Franklin and Raymond Gosling in 1952. It is know as the B-form. It was clearer than the other X-ray patterns because water was included in the DNA sample. Both James Watson and Francis Crick were by the simplicity and symmetry of this pattern. The distintive "X" in this X-ray photo is the telltale pattern of a helix. Because the X-ray pattern is so regular, the dimensions of the helix must also be consistent. For example, the diameter of the helix stays the same.........

DNA or deoxyribonuc-leic acid is the heitary matieral in the humans and other animals all almost organisms. Nearly every cell in a person's body has the DNA. Most DNA is located in the cell nucleus.

DNA

Image result for RNAen.wikipedia.orgRibonucleic acid (RNA) is a polymeric molecule implicated in various biological roles in coding, decoding, regulation, and expression of genes.


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