U.S. breeds genetically modified babies for the first time with one parent and two mothers

According to the Australian "Daily Telegraph" reported on October 25th, scientists from the Oregon University of Health and Science in the United States have successfully cultivated embryos containing the genetic genes of 2 women and 1 man for the first time recently. Father and two mothers.

Scientists involved in the experiment said they have bred a total of about 12 early human embryos with one parent and two mothers. The breeding method is as follows: take the chromosome of an unfertilized egg and implant it into another egg whose chromosome has been removed in advance. Then the egg is artificially inseminated and cultivated into an embryo.

The chromosome in the egg contains 99.8% of the maternal DNA, so the embryo's DNA mainly comes from the mother who provided the first egg and the father who provided the sperm. It can be said that they are the true parents of this embryo.

The chromosome-removed egg from the second mother only provided the mitochondrial DNA for the embryo, which accounted for less than 1% of the entire embryo's DNA, and did not affect the appearance of the child.

Scientists at the Oregon University of Health and Technology say they will not use these father and mother embryos to make babies.

About one in every 5000 children will develop genetic diseases due to mitochondrial DNA problems. Symptoms include stroke, dementia, blindness, deafness, kidney failure, and heart disease. Therefore, if this technique of replacing egg mitochondrial DNA can be put into practical use, it will play a major role in preventing genetic diseases.

However, this technology will cause fierce ethical debate. Many people worry that it may become the beginning of "artificially designed babies" in the future.

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