Which Statement Expresses Accurately the Genetic Implications of Cystic Fibrosis

Which statement expresses accurately the genetic implications of cystic fibrosis (CF) ?

A) If it is present in a child, both parents are carriers of this defective gene.
B) It is inherited as an autosomal dominant trait.
C) It is a genetic defect found primarily in non-White population groups.
D) There is a 50% chance that siblings of an affected child will also be affected.

Correct Answer:

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