RNA molecules form double stranded helices, just as do DNA molecules, by Watson Crick pairing of nucleotides on the two complementary strands of the helix.

RNA分子能像DNA分子那样形成双链螺旋，通过沃森·克里克配对，两个螺旋的核苷链互补。

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The structures are made from bundles of double-helix DNA strands.

这些结构是由一束束双螺旋DNA链构成。

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Structurally, DNA is composed of two strands that intertwine to form a spring-like structure called the double helix.

从结构上讲，DNA是由两条链相互缠绕构成弹簧状结构称为双螺旋。

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This is - what this diagram shows you is-- the forces that hold these individual strands of DNA into a double stranded form.

你们可以看看这个图表,演示了连接两条DNA长链为双螺旋,结构的化学力

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Antisense drugs are named after one of DNA's two strands in its double-helix structure, which are known as sense and antisense.

FORBES: Antisense and Sensibility