The following pedigree represents:: (A) Osteogenesis imperfecta, (B) Wilson’s disease, (C) Alkaptonuria, (D) Cystic fibrosis
Answer is A. The pedigree shows the Autosomal Dominant inheritance pattern.
The various autosomal dominant disease can be named as,

Mnemonic:
Vo Familial Hypercholesterolemia Autosomal DOMINANT Hai.