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1、Unit 3 Science and nature Welcome to the unit,1,实用精品课件PPT,Can you think of some cases in which science goes against nature?,GM food,Brainstorming:,2,实用精品课件PPT,air conditioner,3,实用精品课件PPT,organ tranplant,4,实用精品课件PPT,artificial rainfall,5,实用精品课件PPT,cloning,6,实用精品课件PPT,7,实用精品课件PPT,cosmetic surgery,8,实用
2、精品课件PPT,What is cloning?,9,实用精品课件PPT,The advanced technique in genetics(遗传学) with which scientists can create or copy things with the same DNA is called -?,10,实用精品课件PPT,Dolly the sheep,11,实用精品课件PPT,True or False?,Dolly is the worlds first cloned mammal. It looks different from a normal sheep. It has
3、 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 successfully cloned.,T,F,T,F,F,12,实用精品课件PPT,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) th
4、e normal reproductive (生殖) process. The clone has the same DNA to the “parent”.,13,实用精品课件PPT,the cloned kitten,14,实用精品课件PPT,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.,1
5、5,实用精品课件PPT,the cloned female pigs,16,实用精品课件PPT,The five little pigs names are Noel, Angel, Star, Joy and Mary.,17,实用精品课件PPT,the first cloned monkey,18,实用精品课件PPT,The name of the cloned monkey is ANDi. It is from “inserted DNA” spelt backwards. It is the first genetically modified monkey. The technol
6、ogy is different from that used for Dolly.,19,实用精品课件PPT,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.,20,实用精品课件PPT,Task 1: Is it a good id
7、ea to clone humans some day?,If you happen to have a cloned cat, how would you feel?,21,实用精品课件PPT,What if another cat with the same appearance comes to you?,22,实用精品课件PPT,What if more cats with the same appearance come to you?,23,实用精品课件PPT,What about a cloned “you”?,Discussion1,24,实用精品课件PPT,Fun pictu
8、res,If cloning goes wrong, what will happen?,A dog or an eagle?,25,实用精品课件PPT,A duck or a crocodile?,26,实用精品课件PPT,A cock or a dog?,27,实用精品课件PPT,A lion or a kangaroo?,28,实用精品课件PPT,A frog or a crocodile?,29,实用精品课件PPT,What do you think of the new kind of technology? Does it have advantages or disadvanta
9、ges?,Discussion 2,30,实用精品课件PPT,Do you think governments should pass laws to prohibit human cloning? Why or why not?,31,实用精品课件PPT,They shouldnt, for,reasons:,Cloning can help cure many diseases and save a lot of people lives. 2. 3. ,Part A,32,实用精品课件PPT,They should, for,reasons:,Cloning can lead to et
10、hical(伦理) problems. 2. 3. ,Part B,33,实用精品课件PPT,Giving an oral report,Today our class had a discussion about whether the governments should pass laws to prohibit human cloning. Some students think that the governments should, for However, some other students think it necessary to prohibit, for In my opinion, ,34,实用精品课件PPT,Thank you for your attention!,35,实用精品课件PPT,Homework,Find more information about clone. 2. Review the new words.,36,实用精品课件PPT,Thank you！,37,实用精品课件PPT,38,实用精品课件PPT,Thank You,更多精品 敬请关注！,