In cystic fibrosis,two unaffected carriers can have a child with the disease.It is as common in boys as in girls.This disease is

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Cystic fibrosis is caused by a recessive allele on the autosomes (non-sex chromosomes). The fact that two unaffected carriers can have a child with the disease indicates that they each carry one copy of the recessive allele and have a 25% chance of producing a child with two copies of the allele (meaning the child has the disease). The disease occurs equally in both boys and girls, which rules out X-linked inheritance. It is not autosomal dominant or X-linked dominant. Finally, pleiotropy refers to a single gene affecting multiple, seemingly unrelated traits or functions, and although cystic fibrosis does affect multiple organs and systems, it is not usually considered a classic example of pleiotropy.

In Cystic Fibrosis,two Unaffected Carriers Can Have a Child with the Disease.It