(
课件网) Unit 5 Lesson 29 DNA—The Story of You 1.学习目标 3.重点探究 2.自主学习 学习导航 5.当堂检测 6.课堂总结 4.拓展提升 新课导入 What do you know about DNA 学习目标 1. 掌握本课新单词：blueprint, general, complex, repeat, twins, pattern, identify, instruction. 2. 掌握本课新短语：in general, be influenced by, except for, be related to. 3.了解更多关于自然、DNA的事实 自主学习 blueprint general complex twin repeat pattern identity related grandson granddaughter instruction n.蓝图 adj.一般的；普遍的 adj.复杂的 n.双胞胎之一；孪生儿之一 v.重复；复述；背诵 n.模式；形式 v.确认；鉴别 adj.有关的；相关的 n.孙子；外孙 n.孙女；外孙女 n.指示；说明 Key words in general except for be related to billions of 一般而言；通常 除……之外 与……相关 数十亿计的；大量 Key phrases 重点探究 Do you want to know the story of you This is the shape of DNA. Do you think it's magic Your DNA comes from your parents. When you build a house, you use a blueprint.What's a blueprint In general, a blueprint is a drawing that shows how to put a house together with many different parts. DNA is the blueprint of life. But building a living thing is far more complex than building a house. It takes millions of years for nature to change the DNA in living things to make them fit the world they live in. How tall are you What colour are your eyes What size are your feet All these things are strongly influenced by your DNA before you are born! DNA is fantastic! ·Except for some twins, every living thing has its own unique DNA. ·Some health problems can be caused by problems in your DNA. Scientists can look for these problems and, sometimes, help you before you become sick. In the future, scientists might be able to change your DNA. ·There are copies of your DNA in every part of your body. For example, your finger has the same DNA as your hair. ·You have your own unique DNA, but it repeats patterns from your parents' DNA. From your DNA, scientists can identify not only you, but also people who are related to you. Your parents and grandparents are related to you, and you have their DNA.When you have a grandson or granddaughter, he or she will have your DNA. Your DNA has billions of instructions that explain why you are the way you are. It's one of the most amazing things on the earth! 1 Read the text and answer the questions below. 1.What is a blueprint In general, a blueprint is a drawing that shows how to put a house together with/using many different parts. 2.Which is more complex, building a living thing or building a house Building a living thing. 3.Do some twins have the same DNA Yes, they do. 4.Is it possible to change your DNA Yes, it is. In the future,scientists might be able to change our DNA. After reading Let's Do It! 2 Fill in the blanks with the phrases in the box. 1. Your homework is quite good _____ a few spelling mistake. 2. _____ the young _____ the old like pop music. 3. Kate's hair is _____ colour _____ her sisiter's. ... ...
