Hemophilia :: essays research papers

HemophiliaHemophilia is a catching linage disease, which is characterized by theinability of blood to clot, or coagulate even from tike injuries. This diseaseis caused by an insufficiency of certain blood proteins, c exclusivelyed cistrons, thatparticipate in blood clotting and often by sudden gene mutation. Therefore,with the absence seizure of factors, the blood clotting process is prolonged. There aredifferent types of haemophilia, hemophilia A and hemophilia B for example.Hemophilia A , the around ordinary form is caused by the lack of factor VIII. Inthe second most common form of hemophilia, hemophilia B (also known as Christmasdisease), factor IX is absent.The condition appears when the person is born. Also, the disease is catching, passed on from parent to child. Because of its genetic makeup,hemophilia is carried by females however those affected are almost continuously males.In one-third of all cases hemophilia thought to be caused by spontaneous genemutation with no family history. This is how females are able to be affectedby hemophilia. Inheritance is controlled by a recessive sex-linked factorcarried by the mother on the X chromosome. There is a fifty percent run across thatthe sons of a female carrier pass on have hemophilia. There also is a fiftypercent chance that the daughters of a female carrier will be carriers ofhemophilia. In addition, all daughters of men with hemophilia are carriers, buthis sons are unaffected. Men cannot channel hemophilia, and female carriersare free of the disease.Hemophilia is the most common hereditary blood disorder. Currently,approximately one in every 10,000 people in all parts of the world suffers fromhemophilia. This blood related disease affects almost 20,000 people in the