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They do that in a very special way in that they - restriction enzymes are able to identify a particular sequence of bases in a gene.
限制性内切酶的工作机制很特别,它能识别基因中的一段特定的碱基序列
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Why are there three bases in a codon?
为什么一个密码子有三个碱基呢
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As physicalist we can still say that the bases of personality is that there're bodies, there're functioning in certain ways.
作为物理主义学者我们认为,人格的基础还是肉体的存在，肉体的存在有很多个性。
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They do that because the bases can interact with one another in particular ways, and this you know about.
它们结构稳定,是因为碱基之间,以特定方式相互作用,这是你需要知道的
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There are four different bases, which I'll talk about in a moment.
有四种不同的碱基,一会我们会讲到
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As shown in this cartoon here, again you don't need to know the details of this, but if you're interested in knowing what's the biological bases of the genetic code this is it.
像这个动画里画的那样,这里你也不需要了解细节,不过如果你很有兴趣想知道,遗传密码的生物学基础
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In DNA there's only four colors, there's only four bases,.
在DNA中仅有四种颜色,只有四种碱基CTGA
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You can say a polymer of DNA, for example, is four bases long, that means it has four of these repeat units and they go in the sequence from 5' to 3' of .
打个比方,要描述一个由,四个核苷酸单位构成的寡聚DNA,就是说它由四个核苷酸单位构成,并且从5'端到3'端的顺序为
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In RNA there's four bases.
在RNA中也只有四种
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Every cell in your body has exactly the same DNA; that is if I could stretch out all the DNA and look at the base pair sequence, the sequences of bases along all the DNA in your chromosomes, they'd be identical in all the cells.
身体内每一个细胞都有完全相同的DNA,如果我把整条DNA展开,然后检查其碱基对的顺序,你体内每个细胞中染色体上,DNA的碱基对顺序,都是完全相同的
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