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This is incorrect. In 2000 (actually even later) the consensus was that Europeans were descended from aboriginal European hunter gatherers. The early evidence from mitochondrial DNA was seen as confirming this view.
It was never the consensus of any large groups of geneticists that Europeans were mostly descended from Near East migrants (this is true btw for S. Europeans) until the first ancient DNA studies around 2005 . Sforza argued for an IMPACT, but even this was contested.
