Page 7: Research news on DNA sequencing

DNA sequencing is a set of laboratory methods for determining the precise linear order of nucleotides (A, C, G, T) in a DNA molecule. Core methodological classes include Sanger sequencing, which uses chain-terminating dideoxynucleotides and capillary electrophoresis for high-fidelity, low-throughput analysis, and next-generation sequencing (NGS) platforms, which employ massively parallel sequencing-by-synthesis, sequencing-by-ligation, or nanopore-based readout for high-throughput, genome-scale applications. These methods entail library preparation, clonal or single-molecule amplification (except in true single-molecule approaches), signal detection, and computational base-calling, followed by quality control and downstream bioinformatic analysis.

World's oldest RNA extracted from woolly mammoth

Researchers from Stockholm University have—for the first time ever—managed to successfully isolate and sequence RNA molecules from Ice Age woolly mammoths. These RNA sequences are the oldest ever recovered and come from mammoth ...

Analytical technique provides new insight into old DNA samples

Research institutions around the world house valuable genetic information that could help unlock countless medical mysteries. However, because DNA degrades over time, it is difficult for researchers to analyze DNA samples ...

Decoding new DNA 'letters' to advance medicine and biotechnology

A research team led by the A*STAR Genome Institute of Singapore (A*STAR GIS) have developed a method to accurately and efficiently read DNA containing non-standard bases—a task once thought too complex for conventional DNA ...

Genomes of 24,000 previously unknown microbes revealed by new tools

QUT researchers have recovered the genomes of more than 24,000 previously unknown microbial species—some from entirely new branches of life that likely evolved before plants and animals. The microbes are detailed in two studies ...

A wealth of genes for seed improvement uncovered in living fossils

Seed plants are essential as a source of food, fuel, medicine, and more. Now, a multidisciplinary team of researchers has combined deep botanical knowledge with powerful genomic technology to decode and mine the DNA of non-flowering ...

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