1
Base pairs
/beɪs ˈpɛrz/
碱基对
2
Sugar phosphate backbone
/ˈʃʊɡər ˈfɒsfeɪt ˈbækboʊn/
糖磷酸骨架
3
Adenine
/ˈædɪniːn/
腺嘌呤
4
Thymine
/ˈθaɪmiːn/
胸腺嘧啶
5
Guanine
/ˈɡwɑːniːn/
鸟嘌呤
6
Cytosine
/saɪˈtəsiːn/
胞嘧啶
DNA Structure
#32
00:00
06:12
Meaning
1
Base pairs
/beɪs ˈpɛrz/
碱基对
Two matching chemical units that connect the two strands of DNA together, like rungs on a ladder.
两个匹配的化学单位将 DNA 的两条链连接在一起，就像梯子上的梯级。
2
Sugar phosphate backbone
/ˈʃʊɡər ˈfɒsfeɪt ˈbækboʊn/
糖磷酸骨架
The repeating chain of sugar and phosphate molecules that forms the outer part of the DNA double helix and holds the genetic information in place.
糖和磷酸分子的重复链，构成 DNA 双螺旋的外层部分，并将遗传信息固定到位。
3
Adenine
/ˈædɪniːn/
腺嘌呤
One of the four basic building blocks found in DNA that pairs with thymine to help store genetic information.
DNA 四种基本组成成分之一，与胸腺嘧啶配对，帮助储存遗传信息。
4
Thymine
/ˈθaɪmiːn/
胸腺嘧啶
One of the four basic building blocks found in DNA that pairs with adenine to help store genetic information.
DNA 中四种基本组成成分之一，与腺嘌呤配对，帮助存储遗传信息。
5
Guanine
/ˈɡwɑːniːn/
鸟嘌呤
One of the four basic building blocks found in DNA that pairs with cytosine to help form the genetic code in living things.
DNA 中四个基本组成单位之一，与胞嘧啶配对，帮助形成生物的遗传密码。
6
Cytosine
/saɪˈtəsiːn/
胞嘧啶
One of the four basic building blocks found in DNA that pairs with guanine to help form the genetic code.
DNA 中四种基本组成成分之一，与鸟嘌呤配对形成遗传密码。
