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Ian Wilmut, who helped clone Dolly the sheep, has been accused of racist behaviour by a colleague. Prim Singh is suing Professor Wilmut and the Roslin Institute for ?1 million in a race-discrimination claim. He is also seeking ?1 million compensation in a case against the Babraham Institute. The Biotechnology and Biological Sciences Research Council, which owns the institutes, said: "We strongly refute the allegations made by Dr Singh."