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UNIT 2 DNA
第二单元 DNA
Lesson 10: What Is DNA?
第10课：什么是DNA？
THINK ABOUT IT!
想一想！
Do you and the students near you look the same?
你和你身边的学生看起来一样吗？
What is the same?
什么地方一样？
Are there differences between you and them?
你和他们之间有不同之处吗？
What can scientists do with "DNA"?
科学家可以用“DNA”做些什么？
Your body and DNA
你的身体和你的DNA
Are you tall?
你很高吗？
Are your eyes black or brown?
你的眼睛是黑色的还是棕色的呢？
What size are your feet?
你的脚多大？
When you were a baby,
你还是个婴儿的时候，
your body already knew the answers to these questions.How?
你的身体就已经知道了这些问题的答案。怎么知道的？
With DNA.DNA is like a blueprint.
通过DNA。DNA像是一个蓝图。
What's a blueprint?
什么是蓝图呢？
A blueprint is a drawing.
一个蓝图就是一幅画。
You use it to build a house.
你用它来盖房子。
A blueprint shows where to put all the parts of the house.
蓝图告诉我们怎样放置房子的各部分。
It's the pattern you use to build the house.
它是你用来盖房子的模型。
DNA is a pattern,too.
DNA也是一种模型。
Your body uses this pattern to build itself.
你的身体用这种模型来构建它自己。
DNA is the "blueprint of life."
DNA是生命的蓝图。
DNA is fascinating!
DNA很吸引人！
Except for identical twins,
除了同卵双胞胎，
each living thing has its own unique DNA.
每种生物自己的的DNA都是唯一的。
Your DNA is in every part of your body.
你的DNA存在于身体的各个部分。
Your finger has the same DNA as your hair.
你的手指和你的头发有一样的DNA，
Your bones have the same DNA as your skin.
你骨头的DNA和你皮肤的一样。
You have your own DNA,
你有你自己的DNA，
but it repeats the patterns from your parents'DNA.
但是，它是复制了你父母的DNA。
From your DNA,
从你的DNA中，
scientists can identify not only you,
科学家不仅可以识别你，
but also people related to you.
还可以识别与你相关的人。
Who is related to you?
谁是与你相关的人？
Your mother and father are related to you.
你的妈妈和你的爸爸是与你相关的人。
So are your sisters and brothers.
你的兄弟姐妹也是。
Some health problems come from your family's DNA.
有些健康问题来自你的家庭的DNA。
Scientists can look for these problems in your DNA.
科学家可以从你的DNA中寻找这些问题。
Sometimes they can help you before you become sick.
有时在你生病之前，它们就可以帮助你。
Your DNA comes from your parents.
你的DNA来自你的父母。
Identical twins are two children that grew from the same egg.
同卵双胞胎是同一个受精卵生长出的两个孩子。
They have identical DNA.They're clones!
他们拥有相同的DNA。他们是克隆人！
Learning Tips
学习贴士
"Identical" means "the same."
“Identical”的意思是“相同的”。
"Identify" means "to determine."
“Identify”的意思是“确定”。
LET'S DO IT!
做一做！
What things about you show your parents'DNA?
你的什么东西会显现出父母的DNA？
With a partner,talk about things that are the same between you and your parents.
跟搭档一起谈谈你和你父母的相同之处。
You can start like this:
你可以这样开始：
Mom is tall.So am I.
我妈妈很高，我也是。
Dad's eyes are not very big.
爸爸的眼睛不是很大。
Neither are mine.
我的也不大。
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