http://ghr.nlm.nih.gov/handbook/inheritance/riskassessment passing it on to their children Genetics Home Reference http://ghr.nlm.nih.gov/handbook/inheritance/riskassessment http://ghr.nlm.nih.gov/handbook/inheritance/riskassessment passing it on to their children http://ghr.nlm.nih.gov/handbook/inheritance/riskassessment