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... (1) The cloning of the sheep, Dolly, in 1997 was an inevitable consequence of the progress being made in genetics and biotechnology. It raises the possibility of breeding many identical copies of animals including transgenic animals, showing desirable features. One of the ethical concerns is that the techniques could be applied to humans, although such work is currently banned. (1) The cloning of sheep at Roslin Institute near Edinburgh was thus a highly significant biological departure, and one of the most momentous scientific events of the 1990s. In 1995, Ian Wilmut, Keith Campbell, and their colleagues cloned Megan and Morag from cultured embryo cells; and in July 1996, Dolly, produced from cultured adult cells, was born. In the following year, the biotechnology company PPL produced Polly, who was not only cloned, but genetically transformed ("engineered") en route. Polly had been fitted with a human gene that causes her to secrete ...