DNA molecules do not arrange themselves.

Light-Induced Switching of Tunable Single-Molecule Junctions

Reported as: Tiniest circuits: Light-controlled molecule switching
Excerpt: One area of research focus in Dresden is what is known as self-organization. “DNA molecules are, for instance, able to arrange themselves into structures without any outside assistance. If we succeed in constructing logical switches from self-organizing molecules, then computers of the future will come from test-tubes,” Dr. Erbe prophesizes.
My comment: The idea that DNA molecules arrange themselves without any outside assistance is framed in the context of light-induced “self-organized” molecules. For contrast, see Common origins of RNA, protein and lipid precursors in a cyanosulfidic protometabolism
Excerpt: The creation of nucleic acid precursors starts with hydrogen cyanide (HCN), hydrogen sulfide (H2S), and ultraviolet (UV) light. The anti-entropic epigenetic effect of light on the de novo creation of amino acids, links amino acid substitutions to cell type differentiation in all genera via the biophysically constrained RNA-medicated chemistry of protein folding.
DNA molecules do not arrange themselves.  Their arrangement requires the biological energy from the sun.

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