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Their study showed an overall pattern of group differentiation and movement across the world, suggesting population expansions and genetic drift processes that would be expected over tens of thousands of years.
Pre-history is broken down onto 3 periods , according to the materiel used for making tools: Some texts will explain that the Old Stone Age (the Paleolithic Age (50000 to 12000 BC) ) is the Age of food-gatherers, while the New Stone Age (the New Stone Age or the Neolithic Age (12000 to 4000 BC)) is referred to as the Age of food producers.Modern humans arose from a single evolutionary event, but our racial diversity illustrates subsequent multiple evolutionary events involving differential survival of populations, geographic range expansions, and migrations.A study of the male Y-chromosome has provided evidence of successful migrations from Africa by different human populations at different times (Underhill, et al. Underhill's team identified 10 haplogroups (using 131 different haplotypes); unique genetic groupings that could be used to study modern human racial distributions.A real Christian might find online dating tends to be a bit difficult for them.
There aren’t many dating sites who feature only Christians online, so in most cases – you don’t really have a big choice.Firstly, I will delve briefly into the genetic record of our early history.Some nuclear DNA sequences (including Y-chromosome data) and mt DNA indicate that modern humans originated and migrated relatively recently from a subset of the African population, putting Africa as the home of modern humanity.Humanity has passed through three major evolutionary phases - hunter gatherer , agricultural and technological .