来自《耶鲁大学开放课程：生物医学工程探索 第3集 第3集》
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and that complement has the following features.互补链有以下特点 -
One, its chain is oriented in the一 这些DNA单链 -
opposite direction: where this one goes 5' to 3',方向相反 一条从5'端到 3'端 -
this one goes 3' to 5'.另一条从3'端到5'端 -
It's oriented in the oppose direction它们方向相反 -
and it has the complementary base pairs at each position.并且所有的碱基都是互补的 -
Where there's an (A) here there's got to be a (T) here,有碱基A的地方一定有碱基T -
where there's a (T) here there's got to be(A) an here,有碱基T的地方一定有碱基A -
where there's a (C) here a (G), a (G), a (C) .碱基C对应着G G对应C -
That's because you have to satisfy this base pair matchingDNA双链要满足互补配对原则 -
in order to have hydrogen以使碱基对之间 -
bonding in each of the struts of the ladder形成氢键