This substance has no 2-prime hydroxyl group on its five-carbon sugar, which alternates with phosphate in the backbone.
The worm-like chain model was created to explain single-molecule pulling experiments done to this substance. Paul Rothemund made a Sierpiński gasket out of this substance in an example of its origami. This substance's "linking number", the sum of its twist and writhe, is a measurement of its degree of supercoil. Firing X-rays at this substance gives a diffraction pattern shaped like an (*)  X. The Z-form of this substance is left-handed, unlike the more common B- and A-forms. In its native configuration, this substance has a major and minor groove. This substance has no 2-prime hydroxyl group on its five-carbon sugar, which alternates with phosphate in the backbone. For 10 points, name this macromolecule that takes a double-helix structure.
The worm-like chain model was created to explain single-molecule pulling experiments done to this substance.
 DNA  [or  deoxyribonucleic acid ; or plasmid  DNA ; prompt on  chromatin ]