求篇关于克隆的英语作文 150词左右 老师就给了一个cloning 可能是围绕克隆的好坏处等 对克隆的看法等
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求篇关于克隆的英语作文 150词左右 老师就给了一个cloning 可能是围绕克隆的好坏处等 对克隆的看法等
Westhusin's experience with cloning animals leaves him upset by all this talk of human cloning. In three years of work on the Missy project, using hundreds upon hundreds of dog's eggs, the A&M team has produced only a dozen or so embryos (胚胎) carrying Missy's DNA. None have survived the transfer to a surrogate (代孕的) mother. The wastage of eggs and the many spontaneously aborted fetuses (胎) may be acceptable when you're dealing with cats or bulls, he argues, but not with humans. "Cloning is incredibly inefficient, and also dangerous," he says.
Even so, dog cloning is a commercial opportunity, with a nice research payoff. Ever since Dolly the sheep was cloned in 1997, Westhusin's phone has been ringing with people calling in hopes of duplicating their cats and dogs, cattle and horses. "A lot of people want to clone pets, especially if the price is right," says Westhusin. Cost is no obstacle for Missy's mysterious billionaire owner; he's put up $3.7 million so far to fund A&M's research.
Contrary to some media reports, Missy is not dead. The owner wants a twin to carry on Missy's fine qualities after she does die. The prototype is, by all accounts, athletic, good-natured and supersmart. Missy's master does not expect an exact copy of her. He knows her clone may not have her temperament. In a statement of purpose, Missy's owner and the A&M team say they are "both looking forward to studying the ways that her clones differ from Missy."
Besides cloning a great dog, the project may contribute insight into the old question of nature vs. nurture. It could also lead to the cloning of special rescue dogs and many endangered animals.
However, Westhusin is cautious about his work. He knows that even if he gets a dog pregnant, the offspring, should they survive, will face the problems shown at birth by other cloned animals: abnormalities like immature lungs and heart and weight problems~ "Why would you ever want to clone humans," Westhusin asks, "when we're not even close to getting it worked out in animals yet?
Even so, dog cloning is a commercial opportunity, with a nice research payoff. Ever since Dolly the sheep was cloned in 1997, Westhusin's phone has been ringing with people calling in hopes of duplicating their cats and dogs, cattle and horses. "A lot of people want to clone pets, especially if the price is right," says Westhusin. Cost is no obstacle for Missy's mysterious billionaire owner; he's put up $3.7 million so far to fund A&M's research.
Contrary to some media reports, Missy is not dead. The owner wants a twin to carry on Missy's fine qualities after she does die. The prototype is, by all accounts, athletic, good-natured and supersmart. Missy's master does not expect an exact copy of her. He knows her clone may not have her temperament. In a statement of purpose, Missy's owner and the A&M team say they are "both looking forward to studying the ways that her clones differ from Missy."
Besides cloning a great dog, the project may contribute insight into the old question of nature vs. nurture. It could also lead to the cloning of special rescue dogs and many endangered animals.
However, Westhusin is cautious about his work. He knows that even if he gets a dog pregnant, the offspring, should they survive, will face the problems shown at birth by other cloned animals: abnormalities like immature lungs and heart and weight problems~ "Why would you ever want to clone humans," Westhusin asks, "when we're not even close to getting it worked out in animals yet?
求篇关于克隆的英语作文 150词左右 老师就给了一个cloning 可能是围绕克隆的好坏处等 对克隆的看法等
关于克隆人的英语作文要求是:作文分三段,第一段说克隆人的好处,第二段说克隆人的坏处,最后一段发表自己的看法.不能有语法问
求一篇关于《我同意克隆人》或《我不同意克隆人》的英语作文 120词左右.
“克隆人”的坏处
克隆的坏处
对克隆人的看法?
求助关于克隆英语作文克隆一个东西 你喜欢的 还有理由 .100词作业
克隆的定义和你们现在对克隆的看法
求一篇英语作文,关于克隆的内容不限.100词左右.
克隆对人类的坏处,请举例.
急.克隆的坏处(英文)
说出克隆人的好处和坏处,在写写自己对克隆人的看法.写出一篇330字的作文.