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1、Unit3 Science versus natureWelcome to the unitLead-inScience is developing so fast that sometimes it is beyond our imagination.Man has created many things such as Radios, TV sets and so on.What else has been created by man?Could you give us some examples?ExplanationClone: produce an exact copy of an
2、 animal or a plant from its own cells Dolly the worlds first cloned adult animal. The scientists who cloned Dolly are to stop experiments involving genetically modifying pigs for human organ transplants because of concerns that deadly new diseases could be passed on to people. Picture-talkThe worlds
3、 first cloned mule(驴驴), was born on May 4. He is created from a cell of his brother.kitten Rainbow The worlds first cloned cat, kitten, named Cc. It was created using a cell taken from an adult cat,Rainbow.The worlds first cloned pigs were produced from an adult female pig using a different techniqu
4、e from the one that produced Dolly. Five cloned pigsA pair of new-born cloned calves They are the second adult-animal clones research centre said the new technique would be used to breed better cattle strains with higher-quality beef or greater milk capacity. The first cloned monkey is another incre
5、mental step toward designing and perfecting new treatments for human genetic disorders.From these pictures, can you identify the differences between the cloned animals and normal ones? Discussions In your opinion, what might be the differences between these cloned animals and normal ones? Can these cloned animals lead a normal life as normal animals? For example, does the mule in Picture 2 run as fast as his brother? Do you think it would be a good ideato clone humans some day? Why or why not?
