'The development of all part of an embryo begins at conception, when the ovum, or egg cell, of the woman is fertilized by a sperm cell of the man .New advances in technology have enabled scientists to observe the the amazing changes that take place in the nucleus of this one -celled fertilized egg. The molecules making up the DNA (deoxyribonucleic acid) of the father and the mother combine to create a human life that never existed before '.Awake! June2009