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建立人际资源圈Cloning
2013-11-13 来源: 类别: 更多范文
Cloning
Human cloning isn't as scary as it sounds. In late February 1997 a British scientist named Ian Wilmut and his research team had cloned a lamb named Dolly from an adult sheep. Dolly was made by replacing the DNA of one sheep's egg with the DNA of another sheep's udder. This was an amazing announcement because an animal had never been cloned before. Only plants had been cloned before and everyone thought that it would never happen. It was all over the news. Before long everyone was thinking about the ethics and what might happen if a human was cloned. However, many people are wrong about their ideas. They are wrong about the technical part of cloning. Making a human clone would not be like making a copy. People got this idea from science fiction. It would be more like making a twin. And just as identical twins are two separate people, so would clones be separate people. Most people think that genes determine everything about us. They forgot about environment. The place and condition a person is raised in is very important. Also, because of the extra steps involved, human cloning will always be riskier than an embryo transfer
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