genes that cause cystic fibrosis, CF, or mucoviscidosis (in Europe) although carriers

don't show any signs of the disease. Therefore, 10 million2 people carry the

defective gene and aren't aware of it. Consequently, it makes it one of the most

common genetic defect in the United States.

CF is a autosomal recessive gene. That means that it may, but doesn't always skip

generations. In order to get this disease, both parents must be carriers. If one parent has CF and the other one is not a carrier than there is a 100% chance that their child will be a carrier. If one parent has CF and the other is a carrier than the child has a 50% chance of having CF and a 50% chance of just being a carrier. If both parents are carriers than their child will have a 25% of having CF, a 50% chance of being a carrier and a 25% chance of not being affected. CF is common in both males and females, there is not a specific sex that it is more common in.

How does a person know if they have CF? There are many symptoms to this deadly disease including: salty tasting skin, constant coughing, large amounts of mucus,

trouble gaining weight, frequent greasy, foul sme

Doctors have many "delivery vans" that deliver the good genes. Doctors transport

vigorous process and puts the mother's health at risk. It may also be hard for a women to get pregnant though because the mucus blocks the sperm from entering the uterus the to the fallopian tubes. About 98% of men with CF are infertile8. Even though sperm are produced, they can't get to the semen because the vas definers is blocked. In some new research, it has been thought that men who are sterile have a different form of CF that oesn't involve the digestive system and the lungs.

need to have all the symptoms in order to have cystic fibrosis, but they usually show most of them. Another way are different genetic testing. Doctors can now do genetic testing for CF, but about 10 years ago they couldn't. In 1989, the location where the of the defective gene on chromosome number 7 is was discovered by Francis S. Collins from University of Michigan. Tests can now be taken to see if an unborn child is infected with CF such tests are amniocentesis, chronic villus biopsy3 and a removal of cells from the embryo during invitro.

Now there are many tests that can be done to find put if a person has CF.

Also CF affects the digestive tract. The overproduction of mucus causes the

Furthermore CF causes the sweat glands to release about 5 times6 as much salt as

normal. In a normal person, mucus in the lungs helps get rid of germs and bacteria in

Some common words found in the essay are:
University Iowa, Furthermore CF, United CF, FEV1 Patients, Michigan Tests, Vice President, Pulmozymec Pulmozymec, Women CF, Actually Alex, , cystic fibrosis, gene therapy, cf patients, sweat test, digestive tract, 50% chance, protein cystic fibrosis, person cf, delivery vans, parents carriers, 50% chance carrier, chance carrier, delivery vans deliver, parent cf carrier, cf 50% chance,
Approximate Word count = 2306
Approximate Pages = 9 (250 words per page double spaced)