How many polynucleotide chains are present in | vedclass

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(B) $DNA$ (Deoxyribonucleic acid) consists of two polynucleotide chains that are coiled around a common axis to form a double helix structure.These tw

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(B) $DNA$ (Deoxyribonucleic acid) consists of two polynucleotide chains that are coiled around a common axis to form a double helix structure.These two strands are antiparallel to each other,meaning they run in opposite directions ($5' \rightarrow 3'$ and $3' \rightarrow 5'$).The strands are held together by hydrogen bonds between the nitrogenous bases.

How many polynucleotide chains are present in $DNA$?

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