Final answer:
Hemophilia Type B is a genetic disorder caused by a deficiency of factor IX, affecting blood clotting and commonly inherited through the X chromosome.
Step-by-step explanation:
Hemophilia Type B, also known as Christmas disease, is characterized by a genetic deficiency that affects the blood's ability to clot normally. The specific deficiency in Hemophilia Type B is a lack of factor IX, which is essential for blood coagulation. This condition is sex-linked, typically passed from a healthy female carrier to her male offspring. Because males have only one X chromosome, they are more susceptible to expressing this recessive trait. Females, having two X chromosomes, would require two defective genes to manifest the disorder.