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Related Concept Videos

Next-generation Sequencing03:00

Next-generation Sequencing

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
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Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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Maxam-Gilbert Sequencing01:05

Maxam-Gilbert Sequencing

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In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
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Applications of Molecular Taxonomy01:20

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Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
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Sanger Sequencing01:57

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DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
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RNA-seq03:21

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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Updated: Aug 27, 2025

Pyrosequencing: A Simple Method for Accurate Genotyping
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Pyrosequencing: Current forensic methodology and future applications-a review.

Mirna Ghemrawi1, Nicole Fernandez Tejero1, George Duncan2

  • 1Department of Chemistry and Biochemistry, Florida International University, Miami, Florida, USA.

Electrophoresis
|September 28, 2022
PubMed
Summary
This summary is machine-generated.

Pyrosequencing, a DNA sequencing method, offers versatile forensic applications. This technology aids in identifying species, bodily fluids, and even predicting traits like diet and smoking habits.

Keywords:
agebody fluid IDepigeneticsforensicsphenotypingpyrosequencingspecies ID

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Area of Science:

  • Forensic Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • Benchtop pyrosequencing systems enable novel forensic applications.
  • Pyrosequencing is a sequencing-by-synthesis technique utilizing chemiluminescent pyrophosphate detection.

Purpose of the Study:

  • To review the pyrosequencing workflow, chemistry, and assay design.
  • To highlight current and potential forensic applications of pyrosequencing technology.

Main Methods:

  • Explanation of the pyrosequencing workflow and underlying chemistry.
  • Discussion of assay design principles for forensic applications.

Main Results:

  • Current forensic uses include species identification, bodily fluid detection, and smoking status determination.
  • Potential future applications encompass distinguishing monozygotic twins, detecting substance abuse, and assessing phenotypic traits.

Conclusions:

  • Pyrosequencing technology is a versatile and valuable tool in forensic genomics.
  • The adaptability of pyrosequencing supports a wide range of forensic investigations.