Review Question - QID 106677

A mother brings her son to the pediatrician because she is concerned about his health. She states that throughout her child's life he has demonstrated aggressive behavior. However, he has recently begun biting himself causing injury and bleeding. The patient has a past medical history of mental retardation and episodes of severe joint pain. His temperature is 99.5°F (37.5°C), blood pressure is 87/48 mmHg, pulse is 90/min, respirations are 17/min, and oxygen saturation is 98% on room air. Physical exam reveals a child attempting to bite his arms. Which of the following is the inheritance pattern of the disease with which this patient presents?