博文
为什么没有克隆人出现？
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有两个原因，一是技术上很难，二是没有商业动力。
“I think no one realized how hard cloning would be in some species though relatively easy in others,” said legal scholar and bioethicist Hank Greely of Stanford University. “Cats: easy; dogs: hard; mice: easy; rats: hard; humans and other primates: very hard.”
There has also been no commercial motive for human cloning. Both the assisted reproduction (IVF) and pharmaceutical industries “immediately said they had no interest in human cloning,” said bioethicist George Annas of Boston University. “That was a big deal. All new technologies are driven by the profit motive,” absent which they tend to languish.
When Dolly the sheep was born, ... she had been cloned from a cell from an adult sheepby Scottish researchers who had worked on the project for a decade. ...
https://blog.sciencenet.cn/blog-39731-988905.html
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