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caption

A screw is an example of a helix, a special kind of space curve. The DNA molecule is a double helix, or two intertwined helices.

headline Science Source General Science

created date 2010-02-13

credit EAST NEWS

source Science Source

byline Charles D. Winters

original transmission reference 2v3267

weight 1,25MB

size 22cm x 22cm by 300dpi

keywords - Show

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