3 Parent Embryos
In this image made available by the Oregon Health & Science University, a faint white blotch in the tube at right is DNA that has been removed from a human egg, center. The red dot is from a laser used in the procedure. Scientists have successfully transplanted DNA between human eggs and grown them into early embryos. Someday that technique that may let children avoid inheriting certain diseases - and give them genes from another woman besides Mom. (AP Photo/Oregon Health & Science University)
