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There will soon be babies in the UK with DNA from three people. A special technique will stop babies being born with a bad disease. The disease affects about one in 6,500 children around the world. The first baby could be born next year. There may be about 150 babies born each year using this technique.
The technique is simple. Doctors take out unhealthy DNA from the mother's egg and add healthy DNA from another woman. Doctors say this is "light at the end of a dark tunnel" for many families. Britain's leader said many parents could now have a healthy baby. Other people say this is bad. It could lead to "designer babies".
Back to the 3-parent babies lesson.
