Early European may have had Neanderthal great-great-grandparent

@article{Callaway2015EarlyEM,
  title={Early European may have had Neanderthal great-great-grandparent},
  author={Ewen Callaway},
  journal={Nature},
  year={2015}
}
Genome of 40,000-year-old jaw from Romania suggests humans interbred with Neanderthals in Europe. 

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