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In double helix of DNA, the two DNA strands are

1. coiled around a common axis
2. coiled around each other
3. coiled differently
4. coiled over protein sheath

Correct answer: coiled around each other

Solution

In the DNA double helix, the two polynucleotide strands wrap around each other to form the helical structure. This is what distinguishes it from simply being coiled around a common axis.

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