In order to weed out inherited disease, British scientists have combined the DNA from one man and two women to create singular embryos.
Using embryos from left over in-vitro fertilizations, research scientists at the Newcastle University have figured out how to "swap out" mutated mitochondrial DNA, which is responsible for serious disease in one in 6,500 children. According to the BBC:
The nuclei from the father's sperm and the mother's egg, which contain the parents' DNA, were removed, leaving behind the faulty mitochondria. The nuclei were put into another egg from which the nucleus had been removed, but which retained its mitochondria. This new embryo contained the genes from both parents plus a tiny amount of mitochondrial DNA from the donor egg.
"What we've done is like changing the battery on a laptop," said Professor Doug Turnbull, who led the research team that published their findings in the Nature journal.
One day, scientists are going to learn not to be so pithy. It only makes people think of bad things.