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Double Helix

  • Definition: The fundamental structure of a DNA molecule consisting of two paired strands held together by complementary pairing of bases and forming the three-dimensional structure of an alpha helix. The paired strands are antiparanel because the 3' end of one strand is opposite the 5' end of the other one.

    Source: Hickman, C.P., et al. 2011. Integrated Principles of Zoology. Fifteenth Edition. McGraw-Hill Higher Education.

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