Autosomally this Paleolithic population appears to have contributed mostly to the ancestry of modern Europeans and South Asians, the two regions where haplogroup R also happens to be the most common nowadays (R1b in Western Europe, R1a in Eastern Europe, Central and South Asia, and R2 in South Asia).
Haplogroup R1a probably branched off from R1* during or soon after the Last Glacial Maxium.
Studies show that the San carry some of the most divergent (oldest) Y-chromosome haplogroups, specific sub-groups of A and B, the two earliest branches on the human Y-chromosome tree, suggesting they may be descendents of a population ancestral to all modern humans.
The departure of mankind from Africa involved them crossing the much lower waters of the Red Sea and moving along the green coastlines and interior of Arabia and on to the rest of Eurasia.
"We think there were massive alterations of ecosystems at that time, including widespread destruction of forests," he said.
"But frogs are pretty good at eking out a living in microhabitats, and as forests and tropical ecosystems rebounded, they quickly took advantage of those new ecological opportunities." Frogs rose to become one of the most diverse groups of vertebrates, with more than 6,700 described species.
The Balkans have been subject to 5000 years of migrations from the Eurasian Steppes, each bringing new varieties of R1a.The exhibits below attest to the fact that this knowledge was known over a hundred years ago.So either your Teachers and Professors are indeed liars, or they were very poorly educated.The theories about how anatomically modern humans populated the world are hotly-debated.However, genetic and archaeological evidence points towards an initial migration from southwestern Africa over 100,000 years ago, which spread eastwards out of Africa into the Arabian Peninsula, before a small group began a worldwide dispersal around 60,000 years ago along mainly coastal routes.