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Genetics play an important role in our everyday lives. They a part of everything from the food we eat to the medicines were use. Genetics is a very wild field in which many new developments have been made. There are many genetic disorders that are caused by a problem with our genetic make-up. Many of these disorders are inherited and are governed by the same genetic rules that determine certain traits. Whenever a genetic disorder dose occurs were have measures to fight is. Genetic engineering, gene slicing and gene therapy are some more common methods. These developments have changed the world as we know it and will continue to do so. Hemophilia is a hereditary blood disease characterized by the inability of blood to clot, or coagulate, leading to hemorrhage, or excessive bleeding, even from minor injuries. An insufficiency or absence of certain blood proteins, called factors, that participate in blood clotting causes the disease. The most common form, hemophilia A, is observed in 80 percent of hemophiliacs and is caused by a lack of factor VIII. In the second most common, hemophilia B, factor IX is missing. The severity of hemophilia varies greatly. The bleeding may occur as excessive bruising or persistent bleeding after a simple cut. Hemorrhaging into joints and muscles can be disabling. Before the advent of modern therapy, the chance of survival to adulthood was poor. Researchers recently discovered that the spontaneous mutation of the factor VIII gene in two children was due to the attachment of a foreign "jumping gene" that disrupted the blood-clotting ability of the factor VIII gene. Inheritance is controlled by a recessive sex-linked factor carried by the mother on the X chromosome. A probability of one in two exists that each boy born to a normal male and a carrier female will be hemophiliac and the same chance that each girl of this union will be a carrier. Of the children of a hemophiliac male and a normal female, all the girls will be carriers and all the boys will be normal.
Approximate Word count = 1279
Approximate Pages = 5.1
(250 words per page double spaced)
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