Hollywood’s blockbusters such as X-men, Gattaca, and Jurassic World have explored the intriguing concept of “germline genome editing” – a biomolecular technique that can alter the DNA of sperm, eggs, or embryos. If you remove a gene that causes a certain disease in an embryo, not only will the baby be free of the disease when born – so will its descendants. The technique is, however, controversial – we can’t be sure how a child with an altered genome will develop over a lifetime. But with the COVID-19 pandemic showing just how vulnerable human beings are to disease, is it…

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