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Updated: Aug 2, 2026
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Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources
Published on: September 3, 2009
Nuclear DNA sequences from late Pleistocene megafauna
A D Greenwood1, C Capelli, G Possnert
1Max-Planck-Institute for Evolutionary Anthropology, Leipzig, Germany. alexgr@amnh.org.
Molecular Biology and Evolution
|November 11, 1999
Summary
Researchers retrieved nuclear DNA from ancient mammoths, ground sloths, and cave bears. Mammoth DNA indicates they were more closely related to Asian elephants than African elephants.
Area of Science:
- Paleogenomics
- Molecular Evolution
- Ancient DNA Analysis
Background:
- Ancient DNA (aDNA) retrieval from extinct megafauna is crucial for understanding evolutionary history.
- Distinguishing true genetic variation from postmortem DNA damage is a significant challenge in aDNA studies.
Purpose of the Study:
- To report the successful retrieval and characterization of multi- and single-copy nuclear DNA sequences from Pleistocene mammoth remains.
- To investigate the feasibility of analyzing nuclear genes from various Pleistocene faunal samples.
- To compare mammoth nuclear DNA sequences with those of extant elephant species.
Main Methods:
- DNA extraction from fossilized remains of mammoths (Mammuthus primigenius), ground sloth, and cave bear.
- Next-generation sequencing to retrieve and characterize multi-copy and single-copy nuclear DNA sequences.
- Bioinformatic analysis to compare retrieved sequences with reference genomes and assess DNA damage.
Main Results:
- Successfully retrieved and characterized multi- and single-copy nuclear DNA sequences from Alaskan and Siberian mammoths.
- Obtained nuclear DNA sequences from a 13,000-year-old ground sloth and a 33,000-year-old cave bear.
- Demonstrated that nucleotide sequence differences between alleles within an individual can be distinguished from postmortem DNA damage under specific conditions.
- Mammoth nuclear sequences suggest a closer relationship to Asian elephants than to African elephants.
Conclusions:
- Multicopy and single-copy genes can be reliably analyzed from Pleistocene faunal remains, expanding the scope of paleogenomic research.
- The study provides a method to differentiate allelic variation from DNA damage in ancient samples.
- The phylogenetic placement of mammoths relative to elephants is clarified through nuclear DNA analysis.
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