Cystic fibrosis

• Cystic fibrosis

  A disorder of cell membranes
• Cystic fibrosis

  • Controlled by a single gene with two alleles
• Normal cell membrane function

  Dominant (C)
• Defective cell membranes


  Recessive (c)
• A person must have two defective cell membranes to have cystic fibrosis, from both parents
• Carrier of the cystic fibrosis allele

  A person with one of each (normal and defective)