Which of the following diseases/disorders is an example of dominant-recessive inheritance?
A) Prader-Willi syndrome
B) Down syndrome
C) Autism
D) Cystic fibrosis

Question

Quizplus · Accepted Answer

Cystic fibrosis is an example of dominant-recessive inheritance. The disease is caused by mutations in the CFTR gene, which codes for a protein involved in regulating the flow of ions in and out of cells. A person must inherit two copies of the mutated gene (one from each parent) to develop the disease, making it a recessive trait. If a person inherits only one mutated copy of the gene, they are a carrier but do not develop the disease themselves. This pattern of inheritance is characteristic of many recessive genetic disorders.

Which of the Following Diseases/disorders Is an Example of Dominant-Recessive