Here is an example of the difficult ethical problems we are going to face in the near future as genetics advances:
From:
http://www.atimes.com/atimes/Middle_East/KA28Ak01.html"The genetic blood disorder Mediterranean anemia, more commonly known as thalassemia, is a hot topic in the Turkish press. The most recent story to hit the headlines has focused on three-year-old twins Muhammed and Beyza, who had their genes altered at birth to be perfect bone marrow donors for older siblings suffering from the potentially fatal condition."