The ‘multi-regional hypothesis’ is based on the
morphology of fossil specimens. According to this idea, archaic sapien
populations in Africa, Europe and Asia all evolved into the modern sapiens.
This hypothesis postulates that there should exist genetic differences
that would have begun developing among Homo erectus and archaic
sapiens roughly one million years ago. If this train of thought
is followed, the genes possessed by European populations would come from
those possessed by the Neandertals.