The invention enables a person skilled in the art to determine whether a product of a gene is involved in the prevention of a mutation. A point-of-sale device at a restaurant identifies a customer at the restaurant, links with a network server associated with a restaurant customer service to which the customer belongs, and transmits an amount owed by the customer for food or other items to a financial services provider. The pet toy is made from a variety of fabrics, wherein different sections of the toy are braided, while other sections of the toy are formed into knots and patterned into twirls. The installation hole is perforated on one of the walls of the chamber. The inner annular groove is communicated to the keyway. Replenishment quantities can be determined for an extended planning horizon.