sahara desert is huge barrier between north africans and blacks

The Saara desert is a huge barrier separating the Berbers from the Subsaarian black people. The Saara desert was a huge natural barrier slowing the gene flow between North Africa and Subsaarian Africa.

It's interesting to note that, during the centuries of occupation of the Iberian Peninsula by the Islamic Caliphate, in the Middle Ages, there was some miscigenation between white Iberians, Arabs and Berbers.



http://www.city-data.com/forum/africa/1430230-berber-people-white-black-distinct-races.html