Most of the baby’s DNA comes from their two parents, with a small percentage from a donor.
The pioneering technique is an attempt to prevent children being born with devastating mitochondrial diseases – these are incurable and can be fatal within days or even hours of birth.
Some families have lost multiple children and this technique is seen as the only option for parents.
Mitochondria are the tiny compartments inside nearly every cell of the body that convert food into useable energy.
Technique explained below 👇🏿
Culled from bbcnews