Hemophilia

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, although B is 5 times less common that A. All races, religions, and economic groups are affected by .
is a bleeding disorder which is inherited genetically. Due to the pattern of inheritance, the disorder generally affects males only. About one third of cases come with a previous family history. Women with a hemophilic gene are called carriers while men are either cs or normal. A daughter of a mother who is a carrier and a father who is normal has a 50% chance of being a carrier herself. A son of the same mother and father has a 50% chance of having . Most of the time carriers are not affected by the disease, but sometimes there are minimal symptoms. Many times is hidden for many generations if no affected males are born. Therefor the hemophilic gene is carried through many generations of females who, because they have one X chromosome that is normal, do not suffer from the disease themselves. Other cases may have no family history, which would mean that the change ...

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