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1、Unit 3 Science and nature,Unit 3 Science and nature Welcome to the unit,Unit 3 Science and nature,Can you think of some cases in which science goes against nature,GM food,Brainstorming,Unit 3 Science and nature,air conditioner,Unit 3 Science and nature,organ tranplant,Unit 3 Science and nature,artif
2、icial rainfall,Unit 3 Science and nature,cloning,Unit 3 Science and nature,Unit 3 Science and nature,cosmetic surgery,Unit 3 Science and nature,What is cloning,Unit 3 Science and nature,The advanced technique in genetics(遗传学) with which scientists can create or copy things with the same DNA is calle
3、d -,Unit 3 Science and nature,Dolly the sheep,Unit 3 Science and nature,True or False,Dolly is the worlds first cloned mammal. It looks different from a normal sheep. It has the same gene as the first sheep. It is legal to clone human beings. Dolly is the only animal in the world that has been succe
4、ssfully cloned,T,F,T,F,F,Unit 3 Science and nature,Scientific definition,Cloning is the creation of cells or whole animals by using DNA(脱氧核糖核酸) from a single parent, bypassing (绕道而行) the normal reproductive (生殖) process. The clone has the same DNA to the “parent,Unit 3 Science and nature,the cloned
5、kitten,Unit 3 Science and nature,The kitten in the picture is called Cc. Its name is from “Copycat”. Scientists in the USA created it with a cell taken from its mother, Rainbow. It was born in December 2002,Unit 3 Science and nature,the cloned female pigs,Unit 3 Science and nature,The five little pi
6、gs names are Noel, Angel, Star, Joy and Mary,Unit 3 Science and nature,the first cloned monkey,Unit 3 Science and nature,The name of the cloned monkey is ANDi. It is from “inserted DNA” spelt backwards. It is the first genetically modified monkey. The technology is different from that used for Dolly
7、,Unit 3 Science and nature,Are cloned animals exactly the same as the “mother animals”,They may have the same appearance but their physical qualities can be very different. Many cloned animals died at a much younger age than average,Unit 3 Science and nature,Task 1: Is it a good idea to clone humans
8、 some day,If you happen to have a cloned cat, how would you feel,Unit 3 Science and nature,What if another cat with the same appearance comes to you,Unit 3 Science and nature,What if more cats with the same appearance come to you,Unit 3 Science and nature,What about a cloned “you”,Discussion1,Unit 3
9、 Science and nature,Fun pictures,If cloning goes wrong, what will happen,A dog or an eagle,Unit 3 Science and nature,A duck or a crocodile,Unit 3 Science and nature,A cock or a dog,Unit 3 Science and nature,A lion or a kangaroo,Unit 3 Science and nature,A frog or a crocodile,Unit 3 Science and natur
10、e,What do you think of the new kind of technology? Does it have advantages or disadvantages,Discussion 2,Unit 3 Science and nature,Do you think governments should pass laws to prohibit human cloning? Why or why not,Unit 3 Science and nature,They shouldnt, for,reasons,Cloning can help cure many disea
11、ses and save a lot of people lives. 2. 3.,Part A,Unit 3 Science and nature,They should, for,reasons,Cloning can lead to ethical(伦理) problems. 2. 3.,Part B,Unit 3 Science and nature,Giving an oral report,Today our class had a discussion about whether the governments should pass laws to prohibit human
12、 cloning. Some students think that the governments should, for However, some other students think it necessary to prohibit, for In my opinion,Unit 3 Science and nature,Thank you for your attention,Unit 3 Science and nature,Homework,Find more information about clone. 2. Review the new words,Unit 3 Science and nature,Thank you,此课件下载可自行编辑修改，供参考！ 感谢你的支持，我们会努力做得更好
