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, or hemophilia, is a sex-linked genetic disorder that is effecting about 20,000 Americans, most of which males. A person with hemophilia either has an inactive or inadequate supply of one of several blood factors needed for blood to clot. Because of this hem ....

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.... chromosomes. If a male has hemophilia, he will have normal sons and all of his daughters will be carriers of the hemophilia disorder because all he can pass on is the defective X-chromosome. Males mostly have hemophilia, but women can also have hemophilia. This is extremely rare though because two defective X-chromosomes would be needed. In fact, the first proven case of women having hemophilia was not until the 1950’s (Bornstein 89). Female carriers are also at risk. These women are known as asymptomatic carriers and may suffer excessive menstrual bleeding, bruising, nosebleeds, and problems during childbirth. One seriou ....