Aaron has cystic fibrosis. This means that his mother is a carrier for the cystic fibrosis gene, while his father __________.
A) is also a carrier
B) is not a carrier
C) does not have a cystic fibrosis gene
D) has two cystic fibrosis genes

Question

Quizplus · Accepted Answer

Cystic fibrosis is an autosomal recessive disorder, meaning that for Aaron to have cystic fibrosis, he must have inherited one defective gene from each parent. Therefore, both his mother and his father must be carriers of the cystic fibrosis gene.

Aaron Has Cystic Fibrosis