In the human body, each cell contains 23 pairs of chromosomes, one of each pair inherited through the egg from the mother and the other from the sperm of the father. Of these chromosomes, those that determine sex are X and Y. Females have XX and males have XY. In addition to information concerning sex, the X chromosomes carry determinants for a number of other features of the body, including the levels of factor Vlll and …showed first 75 words of 965 total…

…showed last 75 words of 965 total…and neither of her X chromosomes were infected. Hemophilia is not always fatal. Many hemophiliacs survive a very long time and lead prosperous lives. For a very long time, hemophiliacs had to travel to hospitals regularly for clotting factor transfusions. Courtesy of new medical advances, many hemophiliacs are now able to treat their disease in the privacy of their own home. Hemophiliacs lead long, happy lives exactly the same as the rest of us do.