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Q.
The length of one complete turn of a DNA double helix is
KVPYKVPY 2011
Solution:
The DNA molecule has the shape of a double helix. The radius of
each helix is about $10\, \mathring{A}$. Each helix rises about $34\, \mathring{A}$ during each complete turn and there are about $2.9 \times 10^8$ complete turns.