What Is Cystic Fibrosis?

Cystic Fibrosis is a life-threatening genetic disease. It causes the mucus inside your lungs to clog up, making it hard to breathe. It is most often found in caucasians, but can affect everyone.
CF is a recessive disease. To get it, you must get homozygous recessive (hh).


Homozygous dominant + Homozygous dominant = Healthy Child
Homozygous dominant + Homozygous recessive = Carrier
Homozygous recessive + Homozygous recessive = Child with CF
Heterozygous + Heterozygous = 25% Healthy Child, 50% Carrier, 25% Child with CF
Heterozygous + Homozygous Dominant = 50% Healthy Child, 50% Carrier
Heterozygous + Homozygous Recessive = 50% Carrier, 50% Child with CF