Unit2Cloningppt.ppt

What animals have been cloned? What animals have been cloned? What animals have been cloned? Which group is real twins? 1.As far as you know, what are the advantages and disadvantages that cloning brings to us? 2. Should Humans be cloned? 1.Dolly the sheep_____. A. looked exactly like the sheep that provides the egg. B. was the exact copy of the sheep that provides the nucleus. C. looked like the sheep that gave birth to it. D. had the characteristics of all three sheep. 2. It can be inferred from the passage that a cloned animal_____.A. usually lives as long as the original oneB. usually lives longer than the original oneC. usually lives shorter than the original oneD. is usually as healthy as the original one 3. The cloning of Dolly the sheep succeeded because____. its easier to clone a sheep than other animals 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 4. Which of the following is not an advantage of cloning? Cloning can be used for medical purposes. Large quantities of food can be produced by cloning. Cloning can help keep animals from becoming extinct. Famous persons who have passed away can be cloned. How did the world react to the first successfully cloned sheep? 2. What are the two broad categories human cloning situations often fall into? 3. According to the author, why are twins more alike than clones? 5. Why do some parents want to save their fatally ill child through cloning? How did Judith Martin suggest referring to one’s DNA donors? 1.implication n. 2. prohibit vt. 3. mount vi./vt. vt. 2. prepare and produce, organize 准备并进行，组织 5. minor a./n. (1) smaller or lesser in degree, size,numbers or importance when compared with ot