Part 1 of Essay
is a genetic blood disease, which is characterized by the inability of blood to clot, or coagulate even from minor injuries. This disease is caused by an insufficiency of certain blood proteins, called factors, that participate in blood clotting and often by sudden gene mutation. Therefore, with the absence of factors, ....

Part 2 of Essay
.... are able to be affected by hemophilia. Inheritance is controlled by a recessive sex-linked factor carried by the mother on the X chromosome. There is a fifty percent chance that the sons of a female carrier will have hemophilia. There also is a fifty percent chance that the daughters of a female carrier will be carriers of hemophilia. In addition, all daughters of men with hemophilia are carriers, but his sons are unaffected. Men cannot transmit hemophilia, and female carriers are free of the disease. ....