Speaking of Neanderthals, what about 'back to Africa' flow? Can't bring up the Neanderthals and ignore that. Well, we can if we cherrypick history with an agenda.
http://www.dailymail.co.uk/sciencet...inent-Europe-3-000-years-ago-populate-it.html
Mota was found in a cave, sitting 6,440ft (1,963 metres) above sea level in southwestern Ethiopia's Gamo highlands.
He was adult male who may have been bound at the time of burial, with stone tools also found in the grave.
He lived in a hunter-gatherer culture.
The man had dark skin, brown eyes, and genetic adaptations for living at high altitudes.
DNA was extracted from the petrous bone, a dense region of the skull excellent for preserving DNA in ancient samples.
Mota is genetically very similar to current inhabitants of the Ethiopian highlands and eastern Africa.
He had no trace of Eurasian ancestry, enabling the researchers to use his genome to better understand the Eurasian genetic component now seen in modern Africans.
They used his genome to determine there was a large migration of western Eurasians into Africa around 3,500 to 4,000 years ago.
This migration from the ancient Near East and Fertile Crescent, roughly corresponding to modern Iraq, Turkey, Iran and Syria(cac land), reshaped the African continent's genetic makeup.
+++++++
And here's the fun part. Remember the source that Mrfreddy posted about near east farmers going to Europe carrying the 'white' gene. Here's more.
By studying the kinds of genes the Stone Age farmers carried to Africa, the scientists also found they were closely related to the same population that had brought agriculture to Europe about 7,000 years ago.
Today, those ancient farmers' closest genetic relatives are found on the island of Sardinia.
This does not mean that there was a huge migration of people from Sardinia to Africa, she adds.
Because of their island isolation, Sardinians have remained relatively unadmixed,
so the population conserves many of the genetic characteristics of the first Neolithic migrants into Europe.
And what does a Sardinian person looks like? Looks like a dark-skinned cac. Similar to the ones we see in west Asia today. Funny, these dark-cacs neadanderthals who came back to Africa just happen to be from the west Asian(near east) area that is tied to Afro-asiatic languages.
I wonder how Semetic languages made their way from west Asia to Africa? Could it be these migrations of these dark-cacs who freddy already admitted went to Europe 7,000 years ago.

I guess a lot of that 'knowledge' that people were dropping about Semites has to be modified.