| 41. | DNA is the famous double helix, two long spirals joined by a giant spiral staircase.
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| 42. | In his 1968 best-selling book " The Double Helix,"
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| 43. | Agora Garden is composed of twenty levels in double helix formation, twisted at ninety degrees.
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| 44. | The tiny double helix has outlasted the mightiest mountains.
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| 45. | "The Double Image of the Double Helix " and " Science and the Unborn ."
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| 46. | The DNA or RNA of viruses consists of either a single strand or a double helix.
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| 47. | This saga of DNA meets real world is about as mysterious as the double helix itself.
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| 48. | The double helix then separates into two single strands which are in the random coiled conformation.
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| 49. | The DNA molecule is a double helix, resembling a ladder that's been twisted along its length.
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| 50. | He supplied the journal's first drawings of Sputniks in orbit, continental drift and DNA double helixes.
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