Siva Vaidhyanathan, a professor of media studies at the University of Virginia and author of the book The Googlization of Everything, says that this is going to raise some difficult questions for Google, which owns YouTube.

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However, the technique is so close to the "cloning" technology used to create Dolly the sheep that it will raise difficult ethical questions for doctors.

BBC: Gene technology

Moreover, for those cases in which either the outcome of trial or intervening legal rulings by other courts raise questions about the merits of the original prosecution, it can often be difficult to get the special attention that is often required in the interests of justice.

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