"Designer" Babies

The future is now developing more technology that can help determine if a baby will have a certain disease, and parents can also genetically enhance other babies so they can help save their other child that has the disease. Now, that's what some parents are doing. They originally have a child and their child is going to have a disease, and a way to save their child they can genetically make up another child to save their first child. As both of the children are growing up the second child has to help the first child in a way for a long time because they have a disease.