Wow this was some wild a$$ stuff. It seems that it is possible for two fertilized eggs to merge and produce one person with two different DNA profiles. Sometimes when this happens it results in an Hermafrodit or Siamese Twins. But in some cases, perhaps if both eggs were the same sex, it results in one person. Normal in all respects and unless they have a need to do some DNA testing they may never know. A woman almost had her children taken away by the court because DNA showed that they weren't her children! Freaky...Freaky...Freaky!!!