Final answer:
The inherited inability to produce clotting factor VIII or IX results in hemophilia, a genetic disorder where patients experience excessive bleeding and may require clotting factor infusions.
Step-by-step explanation:
An inherited inability to produce clotting factor VIII or IX results in the condition known as hemophilia. Specifically, the lack of clotting factor VIII leads to hemophilia A, which accounts for about 80% of all hemophilia cases, while a deficiency in clotting factor IX causes hemophilia B, making up around 20% of cases. These disorders are X-linked, typically passed from carrier mothers to their male offspring, and characterized by excessive bleeding from minor injuries and internal bleeding into muscles and joints.
Treatments for hemophilia may include regular infusions of clotting factors from healthy donors. Advances in genetic therapy hold promise for future treatment options. Hemophilia C, caused by a defect in factor XI, follows a different inheritance pattern and is not limited to male patients as it's associated with an autosomal chromosome.