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Griffith studied two stains of bacteria that caused pneumonia.
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P.A. Levene determined the basic structure of nucleotides that makes up the DNA
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Oswald Avery identified molecules that transfered the R strain of bacteria into S strain.
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Erwin Chargaff published his work in 1950. His data was names the Chargaff rule: C=G and T=A.
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Rosalind Franklin took and studied the famous photo called Photo 51 that said DNA was a double helix or a twisted ladder shape formed by two necleotides.
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He discovered the double structure of DNA.
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they published results with evidence that DNA is the transforming factor. Their experiment involved a virus that attacks bacteria.
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He showed the triple-stranded helix in DNA to the science world.
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Crick and Watson published a one paged letter in the journal Nature that suggested the structure of DNA and the method of relicating of the molecule deduced from the structure.
