新人教版英语高二下module 8《unit 2 cloning》ppt课件之六.ppt

Period 1 Warming up Reading What will you think of ? A strawberry plant The plant produces its own runners. A stem Take cuttings from growing plants to make new ones. They are identical in sex and appearance, who are produced from the same original egg. She was c______while the others were born naturally. It is the exact copy of another sheep and the first cloned mammal. different from loned Dolly the sheep Its name is Andi, the first genetically modified monkey. Dog Snuppy was created by Korean and American scientists Cloning is a way of making an exact _____ of another animal or plant. What is Cloning? copy What is the difference among them ? clone Clone, also called reproduce asexually (无性生殖 /繁殖), is the creation of cells or whole animals using DNA from a single “parent”, without using the normal reproductive (有性生殖) process. The clone has the exactly same DNA to the parent. It includes natural and man-made clone. Prediction What do you think the article is about by reading this headline? What is the main idea of the passage? The passage tells us that animal cloning raised __________ and scientists are not sure about its______. arguments future What is the writing style? Expositive(说明文) Descriptive（记叙文） C. Argumentative（议论文） Skimming ___.Cloning has two major uses and successful clone. ___.Cloning is a way of making an exact copy of another animal and plant(definition) ___. The effect of Dolly. ___. It is forbidden to clone human beings. ___.The problems of Dolly. 1 2 3 4 5 Definition 2 major uses of cloning Cloning procedure The first successful animal clone It is a way of __________________ of another animal and plant. 1)to produce ___________quantities of plants . 2)It is valuable for research on new ______________and medical research on ________. Cloning plants ______________while cloning of animals is ___________ The cloning of_______