Abstract
The intrinsic birefringence of multiple-coiled DNA is computed in terms of an equally dense array of parallel DNA molecules. The birefringence for n times-coiled DNA molecules is given by [Formula: see text] where βo = 0, βi = tan-1 (pi/2πri), pi = period of the ith helix coil and ri = radius of ith helix coil. The formula is applied to two cases of helically coiled DNA in biological material and found to agree quantitatively with experimental results.
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Selected References
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