Word: ewe
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Dates: during 1990-1999
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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...
...contrail. The landmark paper published late last week in the journal Nature confirmed what the headlines had been screaming for days: researchers at the Roslin Institute near Edinburgh, Scotland, had indeed pulled off what many experts thought might be a scientific impossibility. From a cell in an adult ewe's mammary gland, embryologist Ian Wilmut and his colleagues managed to create a frisky lamb named Dolly (with apologies to Ms. 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...
...nucleus--and all the DNA it contained--as though it were its own. They also triggered a burst of biochemical activity, jump-starting the process of cell division. A week later, the embryo that had already started growing into Dolly was implanted in the uterus of a surrogate ewe...
...announcement which has left both the scientific and ethical communities aghast, a researcher working for a private company in Edinburgh, Scotland, has apparently created the first successful clone of an adult mammal--a ewe, genetically identical to a six-year-old adult sheep...
Wilmut said Dolly, a seven-month-old ewe, was created by fusing a cell from an adult sheep with an egg from a different sheep. Because the DNA of the egg cell was removed, the DNA of the adult cell directed the subsequent growth and development...