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Studying DNA and RNA
DNA Sequencing Methods and Uses
Description
DNA sequencing methods can read millions of DNA fragments at the same time. Next-generation sequencing made this process much faster and much less expensive than older methods. The first human genome project cost $2.7 billion and took 15 years. It was completed in 2003 after major international cooperation among research tea...
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Transcript
下一代测序是一组技术的统称,这些技术可以促进从许多不同物种或个体群体中相对快速地生成序列数据。
这些数据可用于精细的群体遗传学或临床研究,并且这些技术比传统测序方法更快、更具成本效益。
Next-Generation 测序方法有很多种,但可以说最流行的是可逆终止子测序。其他包括焦磷酸测序和连接测序。
在可逆终止子测序中 - 首先将纯基因组 DNA 切割成 100-1000 个碱基对的较小片段。然后将特殊接头(具有引物位点的寡核苷酸序列)连接到这些 DNA 片段的两端。
然后将单链 DNA 片段加载到称为流动槽的专用芯片上,该芯片预包被有与接头序列互补的短寡核苷酸序列。DNA 片段通过其接头与芯片结合。
在扩增阶段,然...
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