Dna is built up the same way in every person. The major pieces of it are shown above. As you see in the pictures all of the A's (adenine) connect to the T's (thymine). Then the G's (guanine) and the C's (cytosine) connect. These nitrogen bases are connected to the sugar phosphate structures on the sides. On the right the picture shows the double helix shape. The double helix is always spun to the right.
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