Hemophilia
- Chromosome number of gene disorder

Everyone inherits two sex chromosomes, X and Y, from his or her parents. A female inherits one X chromosome from her mother and one X chromosome from her father (XX). A male inherits one X chromosome from his mother and one Y chromosome from his father (XY). The gene that causes Hemophilia is located on the X chromosome.

–Type of disorder
Hemophilia is a rare bleeding disorder in which the blood doesn't clot normally. If you have Hemophilia, you may bleed for a longer time than others after an injury. You also may bleed inside your body (internally), especially in your knees, ankles, and elbows. This bleeding can damage your organs and tissues and may be life threatening.
Others types off Hemophilia: Hempophilia A or classic hemophilia: A person with this type of hemophilia has low levels of or is completely missing factor 8 (Also called FVIII or factor VIII deficiency) 80% of people with hemophilia have Type A Hemophilia. Factor VIII deficiency usually manifests in males. Hemophilia B: This person has low levels of or is completely missing factor 9 (Also called FIX or factor IX deficiency) 20% of people with hemophilia have Type B Hemophilia. Factor IX deficiency usually manifests in males. Hemophilia C: This person has low levels of or is missing completely factor 11 (Also called FXI or factor XI deficiency) Hemophilia C is 10 times more rare than type A. Factor XI deficiency is different because it