STRUCTURE OF DNA

Genetics as it applies to evolution, molecular biology, and medical aspects.

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Batt11
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STRUCTURE OF DNA

Post by Batt11 » Fri Aug 11, 2006 12:29 pm

what method was used to discover DNA and how does it work

Batt11
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Post by Batt11 » Fri Aug 11, 2006 12:55 pm

anyone

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mith
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Post by mith » Fri Aug 11, 2006 1:23 pm

lookup the dna article on wikipedia
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Post by Batt11 » Fri Aug 11, 2006 4:17 pm

yeah I have but I still cannot find the answer,

does any1 hav any ideas.

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canalon
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Post by canalon » Fri Aug 11, 2006 4:50 pm

Search for Watson & Crick for the structure. Meselsohn (sp?) and Stahl for the replication.
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

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Post by Batt11 » Fri Aug 11, 2006 5:03 pm

I've looked 4 ages but still cannot find out what the method was called and am still open to all suggestions.

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mith
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Post by mith » Fri Aug 11, 2006 7:49 pm

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.

wikipedia quote...
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Post by biorad » Mon Aug 14, 2006 8:53 pm

The method was x-ray crystallography, and it was performed by Rosalind Franklin. Without her pictures, Watson and Crick would not have been able to determine the double helical structure of DNA

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Post by truman » Tue Aug 15, 2006 1:18 am

why I can't log in the correspongding website of wikipedia

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