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基本上，这4种核苷酸构成了所有的遗传语言。
Essentially, the four nucleotides compose all genetic language.某些DNA区域具有三个或四个核苷酸的重复序列。
Certain areas of DNA have repeated sequences of two or three nucleotides.它还可以帮助核苷酸组装成RNA，最终进入囊泡内部。
It can also help nucleotides to assemble into RNA which will end up inside the vesicles.在所有的这些核苷酸中，他们仅发现了4处突变。
Among all these nucleotides, they found only four mutations.核苷酸经历分解，使得有用的部分可以在合成反应中重复使用以产生新的核苷酸。
Nucleotides undergo breakdown such that useful parts can be reused in synthesis reactions to create new DdhCTP分子模仿这些核苷酸构建块，并融入病毒的基因组。
The molecule ddhCTP mimics these nucleotide building blocks and becomes incorporated into the virus's genome.该次级机制涉及激活细胞需要复制其DNA的核苷酸的细菌代谢。
The secondary mechanism involves activating the bacterial metabolism of nucleotides that cells need to replicate their DNA.这个矢量包含四种碱基每种的出现频率，核苷酸的平均位置和核苷酸的生物化学性质。
The vector includes the occurrence frequency 年代后期婴儿配方奶中引入核苷酸，因为核苷酸可以作为生长因子，可能增强婴儿的免疫系统。
Late 1990- Nucleotide fortification was launched into infant formula because nucleotides can act as growth elements and will improve the infant immune system.一个细胞约有30亿对核苷酸（每个基因约有1,200对核苷酸）。
A cell contains a chain 在基因的每个核苷酸位置，四种核苷酸中的一个是在整个群体中占优势的核苷酸。
For each nucleotide position in 超过1,000个核苷酸，具有1,122和2,229个核苷酸的新插入物几乎没有成功-约0.5%的时间。
Beyond 1,000 nucleotides, new inserts with 1,122 and 2,229 nucleotides had little success--about 0.5 percent of the time.如果引物长度小于22个核苷酸，则尝试加长引物至25-30个核苷酸。
If the primers are less than 22 nucleotides long, try to lengthen the primer to 25 30 nucleotides.如果引物长度小于22个核苷酸，试着将引物延长到25-30个核苷酸。
If the primers are less than 22 nucleotides long, try to lengthen the primer to 25 30 nucleotides.每个核苷酸由()组成.
Each nucleotide is composed of.每个核苷酸由()组成.
A nucleotide consists of.与DNA一样，RNA是一长链核苷酸。
Like DNA, RNA is a chain of nucleotides.约由75～90个核苷酸组成。
Composed of 75- 90 nucleotides.约由75～90个核苷酸组成。
Its chain is composed of 75 to 90 nucleotides.问题是糖和构成每个核苷酸的碱基。
The problem is the sugar and the base that make up each nucleotide.
