How is hemophilia A (classical hemophilia) different from hemophilia B?

Question

Quizplus · Accepted Answer

Hemophilia B is a less common form of the disorder resulting from a mutation in the gene for clotting factor IX rather than for clotting factor VIII. This gene is also located on the X chromosome, and the inheritance pattern is the same as for hemophilia A. Both disorders show few if any problems right after birth because maternal clotting factors are still circulating in the newborn. Other symptoms and issues are essentially the same.

How Is Hemophilia a (Classical Hemophilia) Different from Hemophilia B