Causes and Risk Factors of Hemophilia
Hemophilia is often passed down from parents to children through the X chromosome. Mutations in either of the gene for the factor VIII protein or the gene for the factor IX protein leads to the low production of these clotting factors. This change in a copy of the gene that makes factor VIII or factor IX is called a Hemophilia allele. Both of these factors are found on the X chromosome.
…
