高中英语 Unit3《Science versus nature》Welcome to the unit课件2 牛津译林版必修5

1、Module 5, Unit 3 Welcome to the unit,The advanced technique in genetics(遗传学) with which scientists can create or copy things with the same DNA is called -?,clone,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 no

2、rmal reproductive (生殖) process. The clone has the same DNA to the “parent”.,Dolly and its creator,cloned female pigs,cloned calves from Japan,the first cloned monkey.,cloned chicken,the cloned deer,Do you think the cloned animals are as healthy as the natural ones?,Dolly is, but scientists do not ye

3、t know whether this is the exception(例外) or the rule. Some early evidences suggest that clones may have health problems and that they may age prematurely (早衰的，未老先衰).,If you are a scientist, what doyou want to clone?Why?,Brainstorming,More contributions to human,More world champions,China, a more har

4、monious community,Just imagine,Supposing you are facing your second self who looks like you, talks like you and thinks like you, how do you feel?,Try to describe Bushs feelings.,If cloning goes wrong, what will happen?,Fun pictures,A dog or an eagle?,A duck or a crocodile?,A cock or a dog?,A lion or

5、 a kangaroo?,A frog or a crocodile?,A tortoise or a bear?,A bird or a dog?,A dog or a man?,Discussion,Do you think governments should pass laws to prohibit human cloning? Why or why not?,Party A,They shouldnt, for,reasons:,Cloning can help cure many diseases and save a lot of people lives. 2. 3. ,Party B,They should, for,reasons:,Cloning can lead to ethical(伦理) problems. 2. 3. ,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 stude