First Baby Born From Technique That Combines DNA From Three People.

reports that while the nuclear DNA the child inherited comes from his mother and father, he “also has mitochondrial DNA from a second woman who served as an egg donor.” According to a report in Fertility and Sterility, the mother “had already lost an 8-month-old and a 6-year-old to” Leigh syndrome. It further explains that five eggs were altered in the way described, then fertilized. From those, four grew into embryos, but three “had abnormal numbers of chromosomes.” The one remaining was implanted into the mother. http://www.latimes.com/science/sciencenow/la-sci-sn-baby-dna-20160927-snap-story.html