File:DNA, strands locked (plectonemic).jpg
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English: Photograph of a simple rope model of a circular plectonemic DNA duplex. "Plectonemic" means a duplex whose strands are twisted together, and thus topologically locked together. The best-known example is the "traditional" Watson-Crick double-helix. In such a model, the strands cannot be separated without breaking one of both open. As shown in this illustration, any attempt to pull the intact strands apart results in a tangled knot. For the untwisted, i.e., "paranemic" model, see the file <DNA, strands unlocked (paranemic)>. |
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| Source | Own work |
| Author | Notahelix |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 21:55, 27 March 2012 | | 3,175 × 989 (524 KB) | Notahelix (talk | contribs) |
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