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Cystic Fibrosis


Cystic fibrosis is an autosomal recessive trait on chromosome 7. This
disorder affects chloride transport resulting in abnormal mucus production.
This lifelong illness usually gets more severe with age and can affect both
males and females. Symptoms and severity differ from person to person. Cystic
fibrosis is the most common fatal inherited disease among whites and the major
cause of chronic lung disease in children. 50% of people are expected to live
to be 30, but a majority die before age thirteen. 1:2000 whites have cystic
fibrosis, 1:17000 blacks, 1:6000 live births, 1:2500 Americans, and 1:20 is a
carrier.
The genes are inherited in pairs, with one gene coming from each parent
to make the pair. Cystic fibrosis occurs when both genes have mutations. A
person with cystic fibrosis receives one cystic fibrosis gene from each parent.
The parents of a child, with cystic fibrosis, each carry one nonworking copy of
the gene and one working copy of the gene.......

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Approximate Word Count: 1740
Approximate Pages: 7 (250 words per double-spaced page)

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