At present, only a small number of countries permit this, and nowhere is it legal for such embryos to be implanted in the womb.But as the technology matures this could change.Read more about gene editing:

“Within 30 years, it will probably be possible to make essentially any kind of change to any kind of genome,” says Prof Jennifer Doudna, of the University of California, Berkeley, who shared the 2020 Nobel Prize in Chemistry for her role in the development of CRISPR.“You could imagine that, in the future, we’re not subject to the DNA we inherit from our parents, but we can actually change our genes in a targeted way.”

Naturally, such modifications would be confined to the treatment and prevention of disease, and enhancing human capabilities, such as strength and intelligence, rather than endowing the subject with superhero powers.Even so, reservations remain around the DNA editing debate.“The problem with gene editing is that genes don’t work in a simplistic one-to-one way for most of the complex traits people might want to breed selectively for, like strength, beauty and intelligence, and genes also interact with the environment around them,” says Angela Saini, author of Superior: The Return Of Race Science.