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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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Related Experiment Video

Updated: Apr 13, 2026

Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources
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DNA reviews: Ancient DNA.

E A M Graham1

  • 1Forensic Pathology Unit, University of Leicester, Robert Kilpatrick Building, Leicester Royal Infirmary, Leicester, LE2 7LX, UK, eamg1@le.ac.uk.

Forensic Science, Medicine, and Pathology
|April 15, 2015
PubMed
Summary

Ancient DNA analysis presents significant challenges due to DNA degradation. This review explores these complications and highlights major achievements in biomolecular archaeology, discussing potential solutions for DNA recovery.

Area of Science:

  • Biomolecular archaeology
  • Forensic genetics
  • Molecular biology

Background:

  • Forensic DNA profiling is well-established and widely recognized.
  • Biomolecular archaeology, a related field, has achieved significant advancements.
  • Both fields utilize DNA analysis techniques.

Purpose of the Study:

  • To review the complexities inherent in ancient DNA analysis.
  • To highlight key accomplishments within biomolecular archaeology.
  • To discuss DNA degradation and potential mitigation strategies.

Main Methods:

  • Review of existing literature on ancient DNA.
  • Analysis of case studies in biomolecular archaeology.
  • Discussion of molecular techniques for DNA preservation and recovery.

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Related Experiment Videos

Last Updated: Apr 13, 2026

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Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources

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Main Results:

  • Ancient DNA (aDNA) analysis is fraught with challenges, primarily DNA degradation.
  • Despite degradation, remarkable achievements have been made in retrieving and analyzing aDNA.
  • Various strategies are being developed to overcome DNA damage and contamination.

Conclusions:

  • Biomolecular archaeology offers profound insights into the past.
  • Overcoming DNA degradation is crucial for advancing the field.
  • Continued research into molecular techniques will enhance ancient DNA recovery and analysis.