What type of genetic inheritance pattern is associated with cystic fibrosis?

Cystic fibrosis (CF) is associated with an autosomal recessive inheritance pattern, which is why the correct answer is this option. In autosomal recessive inheritance, both copies of a gene in an individual must be mutated for the person to express the condition.

Cystic fibrosis is caused by mutations in the CFTR gene located on chromosome 7. For an individual to have cystic fibrosis, they must inherit two defective copies of this gene, one from each parent. Carriers, individuals with only one mutated copy of the gene, usually do not exhibit symptoms of the disease.

Understanding the genetic mechanism behind this condition is crucial, as it highlights the importance of genetic counseling for individuals who may be carriers, particularly when considering family planning. The other inheritance patterns listed do not apply to cystic fibrosis, thus reinforcing the distinct nature of its autosomal recessive model.