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单击此处编辑母版标题样式,编辑母版文本样式,第二级,第三级,第四级,第五级,2018/7/19,#,Cloning,Unit2 Reading,Had him cloned?,What is a clone?,A clone is group of cells or organisms that are genetically identical and have been produced,asexually (,无性生殖,/,繁殖,) from,the same original cell. They include natural and man-made clones.,cloned,Man-made,clone,Warming up,Two kinds of clones:,is one that occurs in a natural form of cloning,without humans help.,is one that is,produced,through human intervention,(,介入,) .,Natural,clone,A strawberry plant,The new plants that grow from the runners are exact copies of the original plant.,Natural clone,Banyan,Natural clone,Lucky,bamboo,The gardener cuts the plant, and then the cutting produces another new plant.,Man-made clone,Growing new plants,Man-made clone,Twins,They are born naturally and identical in sex and appearance.,Natural clone,Monkey King,Natural,clone,or,man-made clone,?,She,was cloned,while,the others were born naturally.,How does Dolly,differ from,other sheep?,Man-made,clone,In 1996, a sheep called Dolly was born. It is the first mammal to be cloned. It is considered to be the greatest success in the development of cloning.,The following are some photos about cloning. See how much you know about it.,2001,cloning cattle,2002 cloning cats,cloning rabbits,2003 Cloning horse,The Cloning Fluorescent pig (left) and the normal pig (right),2005,Cloning,dogs,2005,Cloning,wolves,2015,Cloning,camel,2018,Cloning,monkey,How was Dolly the sheep born?,Hey, how I was born?,Reading,Cloning:,Where is it Leading us?,egg cell,卵细胞,nucleus,细胞核,体细胞,somatic cell,embryo,胚胎,Fast reading,Read the text quickly. (3 min) Underline or circle something you think is important.,The main idea of the text is_,A. animal cloning is very valuable and can benefit the world.,B. animal cloning could be misused by bad people so it must be forbidden,C. animal cloning is well developed because Dolly the sheep was born.,D. animal cloning raised arguments and scientists are not sure about its future.,Main idea,a,way of making an exact copy of,another,animal and plant.,1.The _ of cloning: _ _,2. The _ and _ of cloning.,3.The _ of Dolly (the _ and,_,_,_,of Dolly).,4. The _ of Dolly.,5. Peoples _ to cloning.,The main idea of each paragraph.,problems,uses,impact,reaction/attitudes,death,birth,procedures,definition,Careful reading,Read the text carefully. Answer some questions.,1. The cloning of Dolly the sheep succeeded because_. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience,C. the scientists were rewarded and got lots of money,D. many other attempts to clone mammals failed,B,Details,2.,The lamb is the clone of the cell from sheep B because _ .,A. it provides the egg cell,B. it gives birth to the lamb,C. it provides the nucleus,D. it is a female sheep,Details,3. The sheep that donated the somatic cell most probably lived _ years. A. 3 B. 6 C. 9 D. 13,Judgment,4.,In the second paragraph, the word “straightforward” means _.,uncomplicated,B. honest,C,. frank,D,. difficult,Guessing,5.,Which of the follow is,NOT,a problem or danger of cloning mentioned in the text?,A. Evil leaders may want to clone themselves.,B. Animal clones may develop the illness of older animals and may die younger than the donor animals.,C. There are moral objections to cloning human beings.,D. Too much cloning may lead to the destruction of the balance of nature.,Details,6.,What about the writers attitude,toward,cloning in this passage?,The writer is against cloning.,The writer is in favor of cloning.,The writer does not state any,personal,opinion about cloning.,D. The writer is in agreement with,cloning,.,Inferencing,Consolidation,Clone is a way of making an exact _ of another animal or plant. Cloning have two _ uses. Firstly, gardeners use it all the time to produce _ quantities. Secondly, it is valuable for research on new plant _ and for medical research on animals. But through,the _ and death of Dolly, cloning has a lot of problems. On the other hand, we know cloning is controversial in some countries for _and _ reasons.,copy,major,commercial,species,birth,moral,religious,1 Cloning means making a copy of an animal or a plant.,2 Gardeners can make a lot of money by cloning plants.,3 Cloning animals is as complicated as cloning plants.,4 Dolly the sheep was the first successful clone of a mammal.,5 Natural clone happen in animals as well as in plants.,F,T,F,T,T,exact another,T or F,commercial,more (than),breakthrough,1. What is the,writing style,?,A. Expositive,（说明性的）,B. Descriptive,C. Argumentative,（议论性的）,D. Narrative,Challenge yourself,2.,It suddenly opened everybodys eyes to the possibility of using cloning to cure serious illness and even to produce human beings.,(,translation,),它突然打开了人们的眼界,让人们看到了利用克隆技术来治疗重病甚至克隆出人类的可能。,Challenge yourself,Sadly the same,arbitrary,fate affected other species, such as cloned mice.,3. In an unfortunate way , the mice and Dolly the sheep had no choice but to die young. No one imagined that this would happen and so no one could prevent it. (,Find a sentence which has the similar meaning,),Is cloning good or bad for us ?,Advantages,Disadvantages,Group 1 and 2 Group 3 and 4,Discussion,Is cloning good or bad?,Advantages,Disadvantages,Brainstorming,5 minutes,1,. Medical,cloning could produce cures for serious illness.,2,. Cloning,plants can produce plants of similar quality for sale.,3,. Cloning,plants can be useful for research on new,plants.,4.,May bring extinct animals back to life,1.,Animal clones may develop the illnesses of older animals.,2.,Animal clones may die younger than the donor animals.,3.,Leaders,may want to clone themselves.,4,. It,is cruel,to,animals.,5. It can weaken the,species.,Homework,Write,a short passage according to the following topic.,Should human cloning be allowed?,Thank you!,Goodbye!,Thank,you,for,your,listening,
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