Word: twinning
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...creator wore chinos. Wilmut may not look the part, but he plays it. He took a cell nucleus from a six-year-old ewe, fashioned from it a perfect twin--adding the nice Frankenstein touch of passing an electric charge through the composite cell to get it growing--and called it Dolly...
...have to be mad to be tantalized. Being human will do. Think of it: what Dolly--fat, insensible Dolly--promises is not quite a second chance at life (you don't reproduce yourself; you just reproduce a twin) but another soul's chance at your life. Every parent tries to endow his child with the wisdom of his own hard-earned experience. Here is the opportunity to pour all the accumulated learning of your life back into a new you, to raise your exact biological double, to guide your very flesh through a second existence...
...Parton), scoring an advance in reproductive technology as unsettling as it was startling. Unlike offspring produced in the usual fashion, Dolly does not merely take after her biological mother. She is a carbon copy, a laboratory counterfeit so exact that she is in essence her mother's identical twin...
...make them an exact copy of their six-year-old daughter, recently found to be suffering from leukemia so aggressive that only a bone-marrow transplant can save her. The problem is finding a compatible donor. If, by reproductive happenstance, the girl had been born an identical twin, her matching sister could have produced all the marrow she needed. But nature didn't provide her with a twin, and now the cloning lab will try. In nine months, the parents, who face the very likely prospect of losing the one daughter they have, could find themselves raising...
...self-esteem depends heavily on social feedback. Genes even mold personality to our place in the family environment, according to Frank Sulloway, author of Born to Rebel, the much discussed book on birth order. Parents who clone their obedient oldest child may be dismayed to find that the resulting twin, now lower in the family hierarchy, grows up to be Che Guevara...