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| | Genetic Study Revises Human Family Tree |
 | | The Neanderthals were large, thick-boned individuals with heavy brows and a brain case as large as that of modern humans but stacked behind the face instead of on top of it. |
 | | Early humans and Neanderthals may have interbred, as some scientists contend, with modern Europeans being descended from both; or the two hominid lines may have remained distinct, with humans displacing and probably slaughtering their rivals. |
 | | The split between Neanderthal and human mitochondrial DNA, which marks the start of the split between the human and Neanderthal lineages, would have occurred between 550,000 and 690,000 years ago, the authors say, while the individual from whom all modern human mitochondrial DNA is descended, would have lived 120,000 to 150,000 years ago. |
| www.ou.edu /cas/zoology/Courses/3333/sci-neanderthal-dna.html (1252 words) |
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