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Image depicting DNA helix model and table. In 1953, Watson and Crick published a paper: A Structure for Deoxyribose Nucleic Acid. Based on available data from X-ray diffraction patterns and 3D conceptualization through model building, Watson and Crick proposed that DNA is a double helix – a twisted ladder – with two phosphate-based backbones and "runged" nucleotides that pair. Their paper ended with this comment: It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.

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      Keywords:

      NSDL,genetic material,dna helix,image description,biological elements,text image,conceptualization,phosphate,Life Science,model building,NSDL_SetSpec_BEN,ladder,double helix,oai:nsdl.org:2200/20081106034220613T,History/Policy/Law,Chemistry,Physics,x ray diffraction,backbones,james watson,diffraction patterns,nucleotides,watson and crick,nucleic acid

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      English

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