克隆(英语ppt课件精华版).ppt

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1、 Key wordsKey words somatic (adj.) 躯体的；肉体的；体壁的 cell (n.) 细胞 asexual (adj.) 生物 无性的；无性生殖的 genotype (n.) 基因型；遗传型 offspring (n.) 后代，子孙；产物 upsurge (n.) 高潮，高涨 Key words dispute (n.) 辩论；争吵；争议 regulate (vt.) 调节，规定；控制 relevant (adj.) 有关的brief introduction Cloning refers to the biology through the somatic cel

2、l of asexual reproduction, and formed by asexual reproduction genotype exactly the same individual offspring of population.Clone sheep Dolly was born As we all know, in 1996 the British scientists made use of an adult sheep somatic cell successfully cloned a lamb, Dolly. cloning research upsurge Alo

3、ng with clone sheep Dolly was born, the whole world started a cloning research upsurge, subsequently, reports of cloned animals appeared continuously.The point of views about clone At that moment, the result immediately was regarded as the most important and promising technology breakthrough,and the

4、 benefits of this breakthrough is obvious.At the same time, disputes also followed.The standpoints of the governments Experts think, animal cloning technology is a success of scientific research on a major event, it both has advantages and disadvantages, measures must be taken to regulate, strictly

5、control the harmful side, make the technology to benefit the human.The standpoints of the governments Therefore,Governments issued the relevant policies. The United States, Germany, France, England, Canada and other countries have established the expert group study this problem, all countries have t

6、he same view that made laws to strengthen the management of this technology, and it is strictly forbidden to use it for cloning human.The standpoints of the governments November 11, 1997, the United Nations signed the document to oppose the use of cloning technology breeding people,including China.

7、On January 12, 1998, 19 countries of the Europ, signed an agreement to strictly prohibited human cloning.The standpoints of the governments Almost all countries think, if allowed the existence of human cloning, they and we will be identical like twins, even more similar, but it was against ethical.M

8、y position Science and technology is a double-edged sword, so is cloning. It can bring us benefits,disaster,too. There is no doubt that cloning is a great achievement, but we have to be rational to use it.We can apply it to our medical system, clone organs to replace the bad ones,and do some experim

9、ents on animals.However, I strongly oppose to cloning human, clones have no parents, but they have their own thoughts, because of it, the world will probably be in a mess.My position In a word,our road is still very long, cloning technology is still in an exploring stage, but I firmly believe that in the future this technology can really bring us happiness !Thanks for watching!Make Presentation much more fun-by Xys 2012 . 11