darolburdge-SC435-Section2-Unit6FinalProjectPart2 - Cystic...

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Cystic Fibrosis Final Project Outline I. Introduction A. Cystic Fibrosis is a disorder that is inherited. In this disorder severe damage can be caused to both the digestive system and the lungs. Currently around 30,000 people in the U.S. are living with Cystic Fibrosis and about 1000 new cases are diagnosed every year. Most cases of Cystic fibrosis are diagnosed by the age of 2 and the current lifespan of people with the disorder is around 39 years. In Cystic Fibrosis there is a defective gene that effects the cells that produce mucus, sweat and digestive juices in the body (Foundation, nd). This disease is relevant and interesting to me because my nephew was diagnosed with CF three years ago. This means that my sister has to be a carrier for the disorder and it also means that my children could be carriers for the disorder. II. Principles of Heredity A. Cystic Fibrosis is a genetic disorder where those who have it have received two copies of the defective gene. In order for this to happen one copy of the defective gene has to be received from each parent. The defective gene that causes Cystic Fibrosis is recessive so a person must have both copies of the gene in order to have the disorder. A person who only has one copy of the gene is referred to as a carrier but they will not display any signs of the disorder (Thomson, 2008).

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