Coil Zipper
Which analogy best describes the structure of a DNA molecule?
A:a coil that is tightly twisted around itself
B:a spring that is compressed
C:a twisted zipper that is held together by its teeth
D:a piece of string that moves freely
C:a twisted zipper that is held together by its teeth – a double helix (2 sides of zipper) held together by H-bonds()the teeth of the zipper).
demonstration on repairing #8 coil zipper’ top stops
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