It isn’t the first time it’s been done, but a new method has successfully resulted in a five-month-old boy having the usual DNA from his mum and dad, plus a tiny bit of genetic code from a donor. US doctors took the unprecedented step to ensure the baby boy would be free of a genetic condition that his Jordanian mother carries in her genes.
Experts say the move heralds a new era in medicine and could help other families with rare genetic conditions.
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