Unit 5 Look into Science.Lesson 29 DNA—The Story of You.课件

课件17张PPT。What do you know about DNA?
What can scientists do with ?DNA?DNAblueprint 蓝图 general adj. 一般的、普遍的repeat 重复，复述twin 双胞胎之一complex 复杂的identify确?认、鉴别
instruction
指示、说明pattern
模式外孙、孙子外孙女、孙女相关的、有关的grandsonrelatedgranddaughter1. What is a blueprint?
2. Which is more complex, building a living thing or building a house?
3. Do some twins have the same DNA?
4. Is it possible to change your DNA?
5. Whose DNA is related to yours?Group Work 1. In general, a blueprint is a drawing that shows how to ?put a house together with many different parts.2. But building a living thing is far ?more complex than building a house.3. Except for some twins, every living ?thing has its own unique DNA.except for 意思是“除...之外，要不是由于” 排出不同类的
except “除...之外” , 排除同类。一般不用于句首。4. From your DNA , scientists can identify not ?only you, but also people who are related to you.a. Not only…but also…不但。。而且。。
连接两个相同的成分或两个分句。当接两个主语时，谓语动词和后面的主语保持一致。Eg; Not only you but also I am a teacher.
b. Relate to 涉及，有关
Eg; The story related to the Second World War.Write a short passage about ?what we learnt today. Try to tell ?what it is,where it is from,...Today, we talked about_____. It's ?the_____of_____. It's ______.Every _____ ?has its own_____ DNA. Some illness can be ?_____by problems in your DNA. So _____ ?might be able to_____your DNA . You have ?your own DNA, but it_____ pattens from ?your______ DNA. From your DNA, ?scientists can______the people who are
_______ you. Your DNA explains why you ?are the way you are...Is it a good idea to change the ?DNA of the food we eat?Finish your writing and your exercise book;
Do the survey about the changing DNA.