Case 3 - Hemophilia A
Family history:
Mr. and Mrs. Smith have a 30 year-old son with Hemophilia A. They
also have one unaffected daughter. Upon further questioning
you realize that there is an extensive family of Hemophilia A.
.
- Their son has two daughters and one son. None of his children are affected. However, one of his daughters has an affected son and two unaffected daughters.
- Their daughter has an affected son, and two unaffected daughters. One of the daughters has two affected sons.