DNA Sequencing Technologies Quiz

What is the basis of DNA sequencing?

• Complementary base pairing

• Presence of a free 3'OH group

• Phosphodiester bond formation

• Template strand synthesis

What is the main advantage of Sanger sequencing?

• High throughput

• Low cost

• Short run times

• High accuracy

Which technique is used to determine the DNA sequence in Sanger sequencing?

• Autoradiography

• Capillary electrophoresis

• Pyrosequencing

• Reverse termination

What is the limitation of Sanger sequencing?

• Labor intensive

• High cost

• Low throughput

• All of the above

Answer explanation

The limitation of Sanger sequencing is that it is labor intensive, expensive, and has low throughput. Therefore, the correct answer is 'All of the above'. Sanger sequencing requires a significant amount of manual labor, which makes it time-consuming and costly. Additionally, it is not suitable for high-throughput analysis, limiting its application in large-scale projects. In conclusion, Sanger sequencing has these limitations, making it less favorable compared to other sequencing methods.

Which technology revolutionized DNA sequencing with massively parallel sequencing?

• Sanger sequencing

• Next-generation sequencing

• Third-generation sequencing

• Pyrosequencing

Answer explanation

Next-generation sequencing revolutionized DNA sequencing with massively parallel sequencing. It allows for the simultaneous sequencing of millions of DNA fragments, making it faster and more cost-effective than traditional Sanger sequencing. This technology has greatly advanced our understanding of genomics and has enabled the study of complex genetic diseases. The correct choice is Next-generation sequencing.

What is the purpose of DNA library preparation in NGS?

• To amplify DNA fragments

• To attach adapters to DNA fragments

• To sequence DNA fragments

• To analyze DNA fragments

Which NGS platform uses emulsion PCR for library amplification?

• Roche 454

• Ion Torrent

• Illumina

• Oxford Nanopore

How is DNA sequencing performed in Pyrosequencing?

• By detecting pH changes

• By measuring electrical current

• By using reversible terminators

• By passing DNA through a nanopore

What is the advantage of third-generation sequencing over second-generation sequencing?

• Longer read lengths

• Single-molecule sequencing

• Real-time sequencing

• All of the above

Which sequencing technology uses nanopores to detect changes in electrical current?

• Pyrosequencing

• Proton detection

• Reverse termination

• Oxford Nanopore