DNA analysis, which has proven to be a major advance in the field of paternity testing, involves the direct examination of the genetic material that a child inherited from its biological parents. DNA is located throughout the human body and in the same identical form.
In a plant with a taproot system, the taproot is the largest, most central, and most dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward.
Arrowroot, or arrowroot starch, is a powdery product made from the arrowroot plant, a starchy tropical root. The plant is dried and ground up to make the powder, which is primarily used as a thickener in the kitchen, much like cornstarch. Much like cornstarch, it is an excellent thickening agent. It has about twice the thickening power of regular flour. Unlike cornstarch, however, arrowroot is completely flavorless and will not impart a starchy taste into puddings or other dishes that it is used to thicken. Another reason that arrowroot is called for in recipes is that it is extremely digestible, moreso than regular wheat flour.