Making babies without eggs may be possible, say scientists

Dr Perry said: “One possibility, in the distant future, is that it might be possible that ordinary cells in the body can be combined with a sperm so that an embryo is formed.”

In other words, two men could have a child, with one donating an ordinary cell and the other, sperm.

Or one man could have his own child using his own cells and sperm – with that child being more like a non-identical twin than a clone.

Dr Perry stressed that such scenarios were still “speculative and fanciful” at this stage.