Unit 2 CLONING CLONING WHERE IS IT LEADING

Unit 2 CLONING

CLONING: WHERE IS IT LEADING US? Revision: What is a natural clone? What is a man-made clone?

Prevision: D The topic 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.

the main idea of each paragraph a way of making an exact 1. Cloning is____________ copy of another animal and plant. ______________ two major 2. Cloning has ________ uses. problems of Dolly. 3. The _____ effect 4. The _____ of Dolly. forbidden to clone human beings. 5. It is _____

Careful reading 1. How do gardeners clone plants? 2. What two major uses do cloning have? 3. What problems do Dolly have? 4. What’s the effect of Dolly? 5. Why is it forbidden to clone human beings?

Dolly the sheep

Dolly and the Father of Dolly –Ianwilmut In 1996, the famous sheep “Dolly” was cloned successfully

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Discussion Is cloning good or bad for us ? Advantages Disadvantages Group 1 and 2 Group 3 and 4

Advantages of cloning 1. to produce commercial quantities of plants 2. be useful for research on new plant species 3. be useful for research on animals. 4. to help cure serious illnesses in humans.

Disadvantages of cloning 1. may develop the illnesses of older animals. 2. may die younger than the donor animals. 3. Evil leaders may want to clone themselves to attain their ambitions. 4. may cause some moral and religious problems.

thinking The writer’s attitude towards C cloning is____ A. Positive B. Negative C. neutral