What Does a Person Who Has Cystic Fibrosis,a Life-Threatening Lung

Multiple Choice

What does a person who has cystic fibrosis,a life-threatening lung disease,have in common with a person who has a cleft chin?

A) They both received their condition from the genes passed from their mother.
B) They both received their condition as a result of a dominant set of gene alleles.
C) They both received their condition from a single gene pair.
D) They both received their condition as a function of mitotic mutation.