Structure of DNA (thumbnail)
Description:
The structure of DNA: DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. (Image courtesy of the U.S. National Library of Medicine.)
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Structure of DNA (thumbnail)
Alt text:
Illustration showing the structure of a DNA molecule.
Caption:
The structure of DNA: DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. (Image courtesy of the U.S. National Library of Medicine.)
