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Here the unique thing was that there's a restriction site inside that is present in normal DNA and not present in sickle DNA.
刚才例子中,特性就是在正常的基因中,有酶切位点,而在患者的基因中却没有
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DNA also has this sort of combinatorial system where you have a finite number of, I guess, bases or amino acids that could combine to a possible infinity of strings of DNA strings.
脱氧核糖核酸也拥有这种组合系统,你的生物基础或氨基酸数量是有限的,但却能组合出,几乎无限的脱氧核糖核酸螺旋结构
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The Hepatitis B vaccine I talked about before produced by recombinant DNA technologies, called Recombivax HB, that's one version of it.
我曾经提到过的通过DNA重组技术,制造的乙型肝炎疫苗,被称作重组乙型肝炎疫苗,那是该疫苗的型号之一
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That's one of the properties of mitosis, that the DNA gets completely duplicated during the S phase, during DNA synthesis phase.
有丝分裂的一个特征,就是DNA在S期内完全复制,S期就是DNA合成期
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It's called cDNA or complimentary DNA to indicate that it's a copy, a complimentary copy of the messenger RNA.
它叫cDNA或者互补DNA,意味着它是一个拷贝,一个信使RNA反转录得出的DNA拷贝
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We talked about the structure of DNA, how it works in terms of a physical chemical model of the DNA molecules.
上节课我们讲了DNA的结构,从理化模型的角度讲了,DNA分子是如何工作的
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If you have DNA fragments, so this is DNA that you've cut up into fragments using restriction enzymes for example.
如果你有DNA片段,例如有一段你用限制酶,切割成片段的DNA
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That's something about the physical chemistry of DNA, what it looks like, and how it behaves in the simple sense.
上面我们直观地讲解了DNA的理化特点,DNA的结构,以及它的功能
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I talked about just not using viruses but using plasmid DNA together with lipids and that's another strategy for gene therapy.
这一部分我们不仅讲了病毒的应用,也讲了利用脂质体包裹的质粒DNA,基因治疗还有其它的策略
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So, totally avoids the manufacturing processes that are used to produce other vaccines; you got to manufacture DNA instead.
这完全避免了曾经用于,制造其它疫苗的那些生产过程,你只需要制造DNA就行了
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You're not just trying to clone the DNA, you're trying to also clone or make many copies of the protein.
你不仅想要复制DNA,更想要克隆或是制造,许许多多的蛋白质产物
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This week we're going to talk about DNA technology and genetic engineering: this is Chapter 3 of the book.
这星期我们将探讨DNA技术,和基因工程,这是本书第三章的内容
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If mitosis occurs the way that it's supposed to, the DNA that's in each of these cells is the same.
如果有丝分裂的过程按部就班地进行,那所有细胞的DNA都是相同的
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If I wanted to link another nucleotide to this DNA chain what would I attach here on the bottom?
如果想把另一核苷酸连接到这条DNA链,我将会在DNA链末端添加什么
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G2 is a phase that indicates the gap between when DNA synthesis occurs and when the next mitotic event occurs.
2期是在DNA合成期完成后,到分裂期开始前的间期
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You take advantage of that, you put it in a test tube, together with nucleotides and primers and your DNA.
利用这一点,把它和核苷酸,引物及DNA一起放进试管
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