Three-parent baby

A three-parent baby is a child conceived through a specialized fertility technique involving DNA from three individuals. This procedure is used to prevent certain genetic diseases caused by faulty mitochondria—structures within cells that produce energy. In this process, the faulty mitochondrial DNA from the mother is replaced with healthy mitochondria from a donor woman, ensuring normal energy production. The resulting baby has nuclear DNA from the mother and father, but mitochondrial DNA mainly from the donor. This technique helps couples at risk of passing on mitochondrial diseases to have healthy children while preserving their own genetic identity.