How would you engineer a baby? I mean really, actually do it.
Last April, Chinese researchers reported that they had tried genetically editing human embryos for the first time to correct a disease gene. Out of more than 80 embryos, however, only a handful came out correctly. In the rest, the gene didn’t get fixed properly, or they ended up with unintended alterations to their DNA (see “Chinese Team Reports Gene-Editing Human Embryos”).
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