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Q.
Width of the DNA molecule is
BHUBHU 2009
Solution:
The $3-D$ structure of DNA is represented by a double helix, in which each turn has a diameter of $34 \,\mathring{A}$ and contains $10$ base pairs at a distance of $3.4 \,\mathring{A}$. The width of DNA molecule is $20 \,\mathring{A}$.