RNA molecules form double stranded helices, just as do DNA molecules, by WatsonCrick 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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Whether we really understand DNA is debatable, but Francis Crick and James D. Watson published the first of many papers describing the double helix structure on this day in 1953.
From a distance, these building blocks look very similar, so every piece of DNA you look at has the same overall shape—the famous Watson-Crick Double Helix.
从远处看，这些基本成分看上去极为相似，因此 DNA 的每一部分的基本形状都是相同的 — 著名的沃森克里克双螺旋结构。