1. An eighty foot black walnut tree was felled on the Hauger/Dorn farm in Hamilton, OH. Five 6-7 foot links of the trunk, to just past the first branching, were harvested and transported to Gerald Dorn Sr.’s wood sculpture shop in Greenwood, SC.

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2. A chainsaw was used to remove bark from the largest link, ~ 7 feet tall.

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3. The double helix pattern was applied to the upright log.

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4. Wood between the helices was removed piecemeal.

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5. Close-up of wood grinding between helices.

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6. Extensive sanding finalized the shape.

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7. Final piece and its creator.

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8. “Double Helix” at the Washington University Center for Pharmacogenomics.

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9. Concept for “Replication”.

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10. “Replication” at the Washington University Center for Pharmacogenomics.

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