Hemophilia Essay -- essays research papers

Hemophilia is a sex-linked hereditary bleeding disorder in which it takes a long time for the blood to clot and abnormal bleeding occurs. It is a hereditary blood coagulation disorder caused by a deficient activity of plasma protein factor thirteen and nine, which affects the clotting post of blood. A coagulation disorder is a disorder associated with platelets- blood cells inhering for blood clotting. The platelets dont function properly in the body of hemophiliacs. There be two types of hemophilia hemophilia A and hemophilia B. This disease affects broadly speaking males. Hemophilia A is the most common. Other names for it ar Greco-Roman hemophilia, and factor thirteen deficiency hemophilia. The bleeding disorder is caused by an transmissible sex-linked recessive trait with the defective gene located on the X chromosome. The X chromosome refers to sex-linked. The recessive inheritance refers to the fact that the trait, hemophilia, is declareed alone when the defective fo rm of the gene alone is present. Females have two X chromosomes for their sex chromosomes. They must carry the defective gene on both(prenominal) to have hemophilia. They must have it on one to carry it, and are then able to pass it on to their offspring. Males have X and Y chromosomes for their sex chromosomes. They provided have one X chromosome, therefore only require a single dose of the defective gene to express the deficiency. Fifty percent of the male offspring of female carriers have the dise...