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Cystic fibrosis is a hereditary disease. The allele for cystic fibrosis is recessive. What does this mean?
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Cystic fibrosis is a hereditary disease. The allele for cystic fibrosis is recessive. What does this mean?

User Belal Mazlom
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Cystic fibrosis is an example of a recessive disease. That means a person must have a mutation in both copies of the CFTR gene to have CF. If someone has a mutation in only one copy of the CFTR gene and the other copy is normal, he or she does not have CF and is a CF carrier.
User Vikas Naranje
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Answer:

Cystic fibrosis can be carried in a heterozygote and affect a homozygous offspring.

Step-by-step explanation:

User Feronovak
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