The transformed egg is then placed in a test tube, where it grows into an embryo. Finally, this embryo is implanted into the womb of a female animal. Reproductive cloning doesn’t always result in an ...

It would be extremely dangerous to attempt human reproductive cloning. In fact, in most animals reproductive cloning has no better than a 3 percent to 5 percent success rate. That is, very few of ...

When it comes to animals, things become ... hair or skin samples. With cloning techniques pioneered in the 1990s, DNA extracted from these non-reproductive cells can be inserted into an egg ...

Even so, reproductive cloning had succeeded for the first time in a primate. For nearly seven years, then, the scientific community has had solid proof that human embryos can be cloned.