Question

Which statement regarding Cystic Fibrosis is NOT correct?

A. If both parents are carriers, there is a 1:4 chance a child will be born with this.
B. Cystic fibrosis is a genetic disorder that is autosomal recessive and is passed on by both parents.
C. The mutated gene blocks sodium and calcium channels, which leads to increased mucus viscosity that blocks organ ducts and causes scarring and organ failure.
D. Cystic fibrosis results from a mutation to the CF transmembrane conductance regulator on chromosome 7.

Answer 1

Cystic fibrosis is a genetic disorder that is autosomal recessive and is caused by a mutation in the CF transmembrane conductance regulator gene on chromosome 7. It leads to increased mucus viscosity, blocking organ ducts and causing scarring and organ failure. If both parents are carriers, there is a 1:4 chance a child will be born with this.

Step-by-step explanation:

The statement that is NOT correct regarding Cystic Fibrosis is option D. Cystic fibrosis does result from a mutation to the CF transmembrane conductance regulator on chromosome 7.

The CFTR gene, when mutated, blocks sodium and chloride channels, which leads to increased mucus viscosity, blocking organ ducts and causing scarring and organ failure. It is a genetic disorder that is autosomal recessive and requires both parents to be carriers for a child to have a 1:4 chance of being born with Cystic Fibrosis.