Acouple comes to you and tells you that they have one son, and that he has duchenne muscular dystrophy. they want to have another baby, but aren’t sure if they should try naturally, have in vitro fertilization with embryos that they can select, or use donor sperm. both parents are healthy and do not show traits of this disease. research how this disorder is inherited. consider what the chances are for a healthy baby with each of these scenarios and what would you recommend to this couple.

A young woman, who was adopted at birth, comes into your office asking you to help her identify her birth father. She already knows that the blood type of her birth mother is A positive. She knows her birth father is one of three men who are willing to help in her search. Your first step is to do a blood test on the daughter. Your results show that she is type AB negative. You make some phone calls and have the three possible fathers come in to give a blood sample. Here are the results: •Man #1 – O negative •Man #2 – B negative •Man #3 – AB positive