What is "helix"? Why is DNA double helix? What is the chemical mechanism which holds the two helices of the DNA molecule together? Describe the chemical attractions between atoms which create this mechanism between the "gene" and "non-gene" parts of a DNA molecule. What is the difference? How much of a DNA strand consists of genes? Name the four nucleotide bases, and the way they pair up in the double helix DNA molecule.
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What is "helix"? Why is DNA double helix? A helix is a three-dimensional shape that looks like a spiral or a coil. DNA is double helix because it consists of two strands that are twisted around each other in a spiral shape. Show more…
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