Imagine for a moment that you were offered the chance to know every gene mutation that you and your family have in your DNA. Three billion bits of data, made up of four powerful letters -- A, T, C and G -- arranged in a sequence can offer you the map to your entire genome.
Knowing this sequence could potentially mean that you might know many of the diseases you could face during your lifetime.
Would you really want to know?
John and Judy West of Cupertino, Calif., did.
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