1. Albinism is a hereditary condition, but occurs only when both parents have albinism genes.
2. It is the fourth time Walcott has suffered a shoulder injury as he struggles with a hereditary condition inherited from his father Don.
3. The research concentrated on three families with a hereditary condition called tylosis with oesophageal cancer.
4. Hemophilia is a hereditary condition in which the blood fails to clot normally.