______________ imperfecta is a disorder of bone fragility chiefly caused by mutations in the COL1A1 and COL1A2 genes that encode type I procollagen.

______________ imperfecta is a disorder of bone fragility chiefly caus

1.	______________ imperfecta is a disorder of bone fragility chiefly caused by mutations in the COL1A1 and COL1A2 genes that encode type I procollagen.
A.	Osteogenesis
B.	Acetogenesis
C.	Fibrogenesis
D.	Hadrogenesis
Answer» B. Acetogenesis