Human ancestors (Introduction)
There were four branches of humans. We are the one left, but there was some sexual interplay:-http://www.scientificamerican.com/article.cfm?id=denisovan-genome&WT.mc_id=SA_CAT_MB_20120905
There were four branches of humans. We are the one left, but there was some sexual interplay:-http://www.scientificamerican.com/article.cfm?id=denisovan-genome&WT.mc_id=SA_CAT_MB_20120905
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