Who ? When ? Where ? Discovered DNA?

Answer 1

Friedrich Miescher (1844-1895) discovered a substance he called "nuclein" in 1869. Somewhat later, he isolated a pure sample of the material now known as DNA from the sperm of salmon, and in 1889 his pupil, Richard Altmann, named it "nucleic acid". This substance was found to exist only in the chromosomes.
In the 1950s, three groups made it their goal to determine the structure of DNA. The first group to start was at King's College London and was led by Maurice Wilkins and was later joined by Rosalind Franklin. Another group consisting of Francis Crick and James D. Watson was at Cambridge. A third group was at Caltech and was led by Linus Pauling. Crick and Watson built physical models using metal rods and balls, in which they incorporated the known chemical structures of the nucleotides, as well as the known position of the linkages joining one nucleotide to the next along the polymer. At King's College Maurice Wilkins and Rosalind Franklin examined X-ray diffraction patterns of DNA fibers. Of the three groups, only the London group was able to produce good quality diffraction patterns and thus produce sufficient quantitative data about the structure.

Answer 2

Francis Crick and James Watson published the double helix structure for DNA in 1953. Crick was at Cambridge and Watson and American from Harvard working in the UK when he met Crick in 1951.

In 1962 These two, plus Maurice Wilkins of King's College London won the Nobel prize for medicine for the discovery of the structure of DNA. He led the X-ray crystallography group at KCL which laid the ground for Watson & Crick to develop their model.

One other person, Rosalind Franklin, also needs to be recognised. An X-ray crystallographer also based at King's College and working specifically on DNA, she died prematurely before the Nobel prize was awarded so we will never know whether she would have been a co-winner. In his book 'The Double Helix' Watson admits to breaking into her office at night to look at her results. There is no doubt that she made a huge contribution to the discovery of the structure of DNA.

Most of the work that led to the publication of the structure was carried out in the UK.

Answer 3

Friedrich Miescher discovered in 1869 the nuclein and sometime later he isolated it into what is now called DNA. The successful discovery of the structure of DNA was carried out by a group in King's College London led by Maurice Wilkins in the 1950s.

Answer 4

Rosalind Franklin, in the 40's. She took an X-ray of the double helix. Watson and Crick took on her research and by accident in 1954 discovered how the nucleic acids assembled together, but they ignored Franklin and her research became forgotten until very recently.

Answer 5

Watson and Crick discovered the double helix or DNA (Deoxyribonucleic Acid). I believe it was in the 60s or early 70s.

Answer 6

Rosalind Franklin discovered the DNA in the 1950s in London, England. Watson and Crick stole it, and took all the credit. They had a disagreement amongst each other and they stole the ideas of Franklin. they sent out unpublished data of Franklin's work and Watson and Crick received this information from Wilkins, the one who worked with Franklin. They stole all of her work and her report and published it in the journal "Nature" in April of 1953. She did not receive credit for her work at all. But they later admitted that they couldn't have put the structure without her work.

Answer 7

Watson and Crick developed the model of DNA. However, there were other people that were working with chrystalographies and stuff...but they were famous because of figuring out the model

Answer 8

I actually thoguht it was Rosalind Elsie Franklin...
My horrible scince book says it was and Winkipedia also says its true.. Crick And Francis Took Her X-Ray photos and made them to look like the photos were theirs...

Here's Winkipeia's Story On Rosalind....

http://en.wikipedia.org/wiki/Rosalind_Franklin

Answer 9

One of the most important people you should remember in all this is Rosalind Franklin. Wilkins was a thief and a punk:-) Also, try reading "The Double Helix".

Answer 10

rosalind franklin dscovered DNA in the 1950s. watson and crick stole this and published it in the magazine 'nature' i n the april of 1953. they took all all the credit though they later admitted that they coundn't have acheived any thing without frankin's work.