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Cystic fibrosis, is it sexlinked?

2 doctors weighed in
Dr. Colton Bradshaw
Pediatrics
1 doctor agrees

In brief: Autosomal recessive.

Cystic fibrosis (CF) is not sex-linked, but autosomal recessive.
That means both parents can be silent carriers--totally unaware--then each passes down this recessive (inactive) gene to their child. This child develops CF because both copies of the formerly inactive gene (1 from each parent) now have no genetic "brake" (normal dominant gene) to prevent the CF gene from expressing itself.

In brief: Autosomal recessive.

Cystic fibrosis (CF) is not sex-linked, but autosomal recessive.
That means both parents can be silent carriers--totally unaware--then each passes down this recessive (inactive) gene to their child. This child develops CF because both copies of the formerly inactive gene (1 from each parent) now have no genetic "brake" (normal dominant gene) to prevent the CF gene from expressing itself.
Dr. Colton Bradshaw
Dr. Colton Bradshaw
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