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Key terms: dna supercoiling number twist math lk molecule negative relaxed writhe then l helical change linking number number of turns circular dna helix dna supercoiling chromosome sum cell plasmid ends bp segment structure positive toroid shape turns in the relaxed solenoidal complex adn fiber negative supercoiling rna dna duplex delta topology packaging equation proteins lobes either strands Search external links cited by footnotes on Wikipedia page DNA supercoil: |
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