In order for a child to develop cystic fibrosis _____.

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Cystic fibrosis is a recessive genetic disorder, which means that a person must inherit two copies of the defective gene (one from each parent) in order to develop the condition. This type of inheritance is known as autosomal recessive inheritance. Therefore, for a child to develop cystic fibrosis, both parents must carry at least one copy of the defective CF gene, and the child must inherit one defective copy from each parent. This can happen if a sperm carrying a CF allele fertilizes an egg that also has that allele.

In Order for a Child to Develop Cystic Fibrosis _____