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Related Experiment Video

Updated: Aug 31, 2025

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Midfacial Morphology and Neandertal-Modern Human Interbreeding.

Steven E Churchill^1,2, Kamryn Keys³, Ann H Ross³

¹Department of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA.

|August 26, 2022

Summary

Neandertal and modern human interbreeding left genetic traces. Facial morphology analysis suggests the Near East was a key region for Neandertal gene introgression into early modern humans.

Keywords:

ancient DNA (aDNA)hominin paleontology hybridization introgression paleoanthropology

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Area of Science:

Paleoanthropology
Ancient DNA studies
Human evolution

Background:

Ancient DNA and fossil analyses reveal Neandertal and modern human interbreeding.
Neandertal gene introgression into modern human genomes is established.
The timing and geographic origins of these hybridization events remain largely unknown.

Purpose of the Study:

To investigate the geographic locations of Neandertal and modern human interbreeding.
To identify regions where early modern human facial morphology shows affinities with Neandertals, suggesting gene flow.

Main Methods:

Comparative morphological analysis of facial size and shape from Neandertal and early modern human fossils.
Multivariate exploratory analysis, including canonical variates and hierarchical cluster analyses.

Main Results:

Facial morphology analysis revealed significant similarities between Neandertals and early modern humans from the Near East.
Both Middle and Upper Paleolithic early modern humans from the Near East exhibited affinities with Neandertals.
These findings suggest a higher degree of Neandertal gene introgression in this region.

Conclusions:

The Near East was a crucial region for interbreeding between Neandertals and early modern humans.
Facial morphology provides insights into the geographic patterns of Neandertal-modern human admixture.
This study highlights the importance of the Near East in the complex history of human evolution and gene flow.