A Chinese scientist caused an uproar when he altered the DNA of twin baby girls as embryos. These changes are permanent.

This prompted a meeting in Geneva aiming to discuss a set of rules governing the editing of the human genome.

Robert Klitzman, a professor of psychiatry and the director of the Masters of Bioethics Program at Columbia University in New York, talks to Al Jazeera about the debate around the controversial subject.

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Xinhua 16 Jul 2019 12:03 CEST

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