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Legend: Illustration of the double helical structure of the DNA molecule. ... The structure of DNA is illustrated by a right handed double helix, with about 10 nucleotide pairs per helical turn.
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www.accessexcellence.org/AB/GG/structure.html
www.accessexcellence.org/AB/GG/structure.html
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Working with nucleotide models made of wire, Watson and Crick attempted to put together the puzzle of DNA structure in such a way that their model would account for the variety of facts that they knew described the molecule.
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www.accessexcellence.org/AE/AEC/CC/DNA_structure.html
www.accessexcellence.org/AE/AEC/CC/DNA_structure.html
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DNA Backbone ... The DNA backbone is a polymer with an alternating sugar-phosphate sequence. The deoxyribose sugars are joined at both the 3'-hydroxyl and 5'-hydroxyl groups to phosphate groups in ester links, also known as "phosphodiester" bonds. ... Structure of DNA Double Helix...
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www.blc.arizona.edu/Molecular_Graphics/DNA_Structure/DN...
www.blc.arizona.edu/Molecular_Graphics/DNA_Structure/DNA_Tutorial.HTML
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DNA - Wikipedia, the free encyclopedia
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Deoxyribonucleic acid ( DNA ) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms and some viruses. The main role of DNA m...
en.wikipedia.org/wiki/DNA
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DNA (deoxyribonucleic acid) forms chains of genetic material organized into chromosomes. The linear structure of DNA arises as deoxyribose, the sugar in DNA, binds with phosphate at both its 3' and 5' ; (three prime and five prime) carbons. ... animated outline of DNA structure;
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www.johnkyrk.com/DNAanatomy.html
www.johnkyrk.com/DNAanatomy.html
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The Discovery of the Molecular Structure of DNA - The Double Helix; ... In order to solve the elusive structure of DNA, a couple of distinct pieces of information needed to be put together. One was that the phosphate backbone was on the outside with bases on the inside; another that the molecule was a double helix.
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nobelprize.org/educational_games/medicine/dna_double_he...
nobelprize.org/educational_games/medicine/dna_double_helix/readmore.html
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Someone else showed them Franklin’s photographs of DNA x-ray crystallography, and from her pictures, they were able to determine that the structure of DNA was organized into a double spiral or double helix.
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biology.clc.uc.edu/courses/bio104/dna.htm
biology.clc.uc.edu/courses/bio104/dna.htm
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