Every seed in that apple, not to mention every seed riding down the Ohio alongside John Chapman, contains the genetic instructions for a completely new and different apple tree, one that, if planted, would bear only the most glancing resemblance to its parents. If not for grafting—the ancient technique of cloning trees—every apple in the world would be its own distinct variety, and it would be impossible to keep a good one going beyond the life span of that particular tree. In the case of the apple, the fruit nearly always falls far from the tree.
