Scientists from Oregon Health & Sciences University created embryos with genes from one man and two women. Thus the emergence of children who have not two but three the parent. 
Photos from open sources This technology may change social structure of modern society, enabling “full functioning” families of several spouses. By the way, in the USA itself and in some other countries at present Legislation adjustments are made that allow such opportunity. For example, in Brazil this year for the first time registered the marriage of three people, and in California legally A child can be more than two parents. But the main thing is a new technique may help prevent transmission of hereditary incurable diseases. Previously, experts from Britain tried to repeat the experience. Scientists have made a statement that they created a child who has three the parent. But such a statement was unfounded. Female DNA amounted to not more than 1% in the gene set. Moreover, this DNA was not from cell nucleus, it was part of mitochondria. A genetic the disease that they tried to cure is transmitted through the maternal lines in mitochondrial DNA. In the world in 1 case out of 5 thousand there is a child with a genetic disorder that is tolerated mitochondrial DNA. Because of this, children can be blind, suffer from epilepsy or renal failure. DNA donation gives a chance such children are born healthy.
A photo from open sources
Scientists from the University of Oregon Health examined nuclear DNA, which makes it possible to move on in this matter. If experience justifies itself, then in the future, scientists will replace genes that carry the disease in the egg to “healthy” and then will carry it out fertilization by male reproductive cells. So far on ethical the reasons they don’t plan to raise a baby from the embryo, as this causes a lot of controversy on the part of the public.
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