Word: clones
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With Hwang's scientific credibility in shambles, the status of the world's most famous dog hangs in the balance. The embattled scientist maintains that Snuppy is the world's first canine clone, and he even hired an independent Korean DNA lab, HumanPass Inc., to verify that assertion. The verdict: HumanPass CEO Seung Jae Rhee told TIME last week, "There is no dispute about these results, and so I am 100% certain on Snuppy's authenticity." But since HumanPass is in essence working for Hwang, that's hardly good enough for the investigative panel at Seoul National University, which...
...Snuppy really was cloned from the ear cell of a 3-year-old male Afghan named Tai, it shouldn't be tough to prove, even to those outside investigators. As long as they have tissue samples from both the clone and the parent, they should be able to determine whether DNA in the nuclei of both animals' cells is identical--the first hallmark of a true clone. Ian Wilmut, the Scottish scientist who created Dolly the sheep in 1996, had to provide such samples to prove to skeptics that he had created history's first mammalian clone...
Evidently, the risk-taking began in 2004, with Hwang's first major scientific paper on therapeutic cloning. In order to clone an adult, you need to put one of its cells into a human egg cell from which the nucleus has been removed. After electrical fusion and chemical activation, the egg can then start dividing, creating embryonic stem cells. (If left to mature, the embryo could eventually grow into a clone of the original adult--something no reputable scientist would let happen...
...annual roundup of the best new products and technological innovations prompted readers to share their excitement about the cool things that await them in the future - maybe even as a holiday gift. Some, however, were troubled by the ethical implications of the cloned dog Snuppy I truly enjoyed your selection of the best new inventions [Nov. 28]. I liked the ENV hydrogen-powered motorcycle and the Shift tricycle, whose rear wheels move closer together at higher speeds and separate for balance at slower ones. But I was most impressed by the LifeStraw [a drinking tube with powerful filters that...
...Hwang, who this year became the first scientist to clone a dog, was already under fire after being forced to apologize in November for ethical lapses in his work. It was revealed that many of the eggs used to produce human stem cells in his first breakthrough work at the start of 2004 had come from two of his own researchers or from donors who had been paid-both serious breaches of medical ethics. But it seems that Hwang still has one last chance to vindicate himself: by proving that his frozen stem-cell colonies are authentic and that...