Source Discover Magazine
![](https://i0.wp.com/intendedparents.com/wp-content/uploads/2018/06/shutterstock_4060107737732247890561770418.jpg?resize=1000%2C667&ssl=1)
It seems impossible, right? We have been taught from the time we were young that babies are made when a sperm and an egg come together, and the DNA from these two cells combine to make a unique individual with half the DNA from the mother and half from the father. So how can there be a third person involved in this process?