What structure is formed when two polynucleot | vedclass

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(D) In the $DNA$ double helix model proposed by Watson and Crick,the two polynucleotide chains are coiled around a common axis in a right-handed fashi

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Double helical ladder-like

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(D) In the $DNA$ double helix model proposed by Watson and Crick,the two polynucleotide chains are coiled around a common axis in a right-handed fashion. This structure is described as a double helix,which resembles a twisted ladder where the sugar-phosphate backbones form the sides and the base pairs form the rungs. Therefore,the structure is best described as a double helical ladder-like structure.

What structure is formed when two polynucleotide chains in $DNA$ are coiled together?

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