A three-person baby has been born using genetic material from two women and a man in Greece. The medical technique was used to overcome the 32 year old mother’s infertility. A technique called maternal spindle transfer was used by medical team in Barcelona in which maternal DNA is put into the egg of a donor woman, which afterwards is fertilised using the father’s sperm. The major portion of the mother’s DNA is held in the nucleus, but a small amount of DNA remains in the mitochondria in the donor egg.