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In double helix of DNA, the two DNA stra...

In double helix of DNA, the two DNA strands are

A

coiled around a common axis

B

coiled around each other

C

coiled differently

D

coiled over protein sheath

Text Solution

Verified by Experts

The correct Answer is:
A
Deoxyribo Nucleic Acid (DNA) is helically coiled macromolecule, made up of two antiparallel polydeoxyribonucleotide chains held together by hydrogen bonds. The chains are interlocked and are. coiled around a common axis. DNA has a diameter of 20 `Å`. One turn of spiral has a distance of 34 `Å` containing 10 nucleotides in each turn.
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