Known as mitochondrial transfer, the decision, from Britain’s Human Fertilisation and Embryology Authority, comes after Parliament voted last year to amend an existing law that would make the process legal when it became available for licensing. “Mitochondrial transfer is used when defective mitochondrial DNA can prevent the birth of a healthy baby,” Dr. Edward Marut, a fertility specialist at Fertility Centers of Illinois, tells Yahoo Beauty. “The mother whose eggs are used retains her main genetic material (chromosomes) in the nucleus of her egg, but mitochondria, the ‘power plants’ of the cell, are transferred from a healthy egg into the egg with abnormal mitochondria.
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