Change:  ability to make strong bones. In dominant (classical) OI, a person has too little type I collagen or a poor quality of type I collagen due to a mutation in one of the type I collagen genes.◄... go back to Pathology homepage   View changes from previous version. (Word count: 73)

Change:  - is a genetic disorder characterized by bones that break easily, often from little or no apparent cause. Osteogenesis impefecta is caused by genetic defects   View changes from previous version. (Word count: 68)