UNIT 2 DNA
第二單元 DNA
Lesson 10: What Is DNA?
第10課：什么是DNA？
THINK ABOUT IT!
想一想！
Do you and the students near you look the same?
你和你身邊的學(xué)生看起來一樣嗎？
What is the same?
什么地方一樣？
Are there differences between you and them?
你和他們之間有不同之處嗎？
What can scientists do with "DNA"?
科學(xué)家可以用“DNA”做些什么？
Your body and DNA
你的身體和你的DNA
Are you tall?
你很高嗎？
Are your eyes black or brown?
你的眼睛是黑色的還是棕色的呢？
What size are your feet?
你的腳多大？
When you were a baby,
你還是個(gè)嬰兒的時(shí)候，
your body already knew the answers to these questions.How?
你的身體就已經(jīng)知道了這些問題的答案。怎么知道的？
With DNA.DNA is like a blueprint.
通過DNA。DNA像是一個(gè)藍(lán)圖。
What's a blueprint?
什么是藍(lán)圖呢？
A blueprint is a drawing.
一個(gè)藍(lán)圖就是一幅畫。
You use it to build a house.
你用它來蓋房子。
A blueprint shows where to put all the parts of the house.
藍(lán)圖告訴我們怎樣放置房子的各部分。
It's the pattern you use to build the house.
它是你用來蓋房子的模型。
DNA is a pattern,too.
DNA也是一種模型。
Your body uses this pattern to build itself.
你的身體用這種模型來構(gòu)建它自己。
DNA is the "blueprint of life."
DNA是生命的藍(lán)圖。
DNA is fascinating!
DNA很吸引人！
Except for identical twins,
除了同卵雙胞胎，
each living thing has its own unique DNA.
每種生物自己的的DNA都是唯一的。
Your DNA is in every part of your body.
你的DNA存在于身體的各個(gè)部分。
Your finger has the same DNA as your hair.
你的手指和你的頭發(fā)有一樣的DNA，
Your bones have the same DNA as your skin.
你骨頭的DNA和你皮膚的一樣。
You have your own DNA,
你有你自己的DNA，
but it repeats the patterns from your parents'DNA.
但是，它是復(fù)制了你父母的DNA。
From your DNA,
從你的DNA中，
scientists can identify not only you,
科學(xué)家不僅可以識(shí)別你，
but also people related to you.
還可以識(shí)別與你相關(guān)的人。
Who is related to you?
誰是與你相關(guān)的人？
Your mother and father are related to you.
你的媽媽和你的爸爸是與你相關(guān)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.
有些健康問題來自你的家庭的DNA。
Scientists can look for these problems in your DNA.
科學(xué)家可以從你的DNA中尋找這些問題。
Sometimes they can help you before you become sick.
有時(shí)在你生病之前，它們就可以幫助你。
Your DNA comes from your parents.
你的DNA來自你的父母。
Identical twins are two children that grew from the same egg.
同卵雙胞胎是同一個(gè)受精卵生長出的兩個(gè)孩子。
They have identical DNA.They're clones!
他們擁有相同的DNA。他們是克隆人！
Learning Tips
學(xué)習(xí)貼士
"Identical" means "the same."
“Identical”的意思是“相同的”。
"Identify" means "to determine."
“Identify”的意思是“確定”。
LET'S DO IT!
做一做！
What things about you show your parents'DNA?
你的什么東西會(huì)顯現(xiàn)出父母的DNA？
With a partner,talk about things that are the same between you and your parents.
跟搭檔一起談?wù)勀愫湍愀改傅南嗤帯?br />You can start like this:
你可以這樣開始：
Mom is tall.So am I.
我媽媽很高，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。