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Question: Answered & Verified by Expert
Length of one coil of B-DNA helix is 
ChemistryBiomoleculesNEET
Options:
  • A 0.34 nm
  • B 3.4 nm
  • C 3.4 Å
  • D 0.34 Å
Solution:
1270 Upvotes Verified Answer
The correct answer is: 3.4 nm
DNA is a double helical structure with two anti-parallel strands with 5I to 3I polarity. The two strands coil in a right-handed fashion. Each turn of the helix is 3.4nm (or 34 Angstrom units) consisting of 10 nucleotides.

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