Multi-regionalism and Probability

There is no need for any bottlenecks at all to explain the evidence.Picture a culture where mem regularly kill all the men from neighbough tribes, but leave the womem alive (and pregnant). Not to hard to imagined, is it?That would lead naturally to a population for which the genetic analysis of the Y-chromossome's DNA would seem to tell us a different story then the genetic anaysis of the mitochondrial DNA.In fact, it would most probabily give us a more recent "ADAM" and a more ancient EVE.

I wouldn't call it a bottleneck because in the scenario I described there isn't necessarily a sharp decrease in the human population. Just a series of sporadic genocydes (like Ruanda or Sudan in modern days).If you add to it the fact that most genocydes were directed towards men, but left many womem alive, you get the result of selectively reducing the Y-chromossome's variabilityEdited by fallacycop, : typo

Jns, there is an important aspect to this mitochondrial study that you have not addressed at all.The study doesn't simply count the number of mitochondrial variants.
It also measures the genetic distance between them (this can be taken as a proxy for how long ago the two lineages diverged (whithin statistical fluctuations of course)).And it turns out that all the lineages outside of Africa are more closely related to each other when compared with the lager variety found in Africa.How do you explain that with your model?

You didn't address the point I made in my previous post, about the lager genetic variability observed among african populations.I'll give you another one to think about:The MtDNA variation observed in Populations around the world allows us (By us I mean the scientists that did the work) to reconstruct a tree of relationships among those populations. It turns out that all the populations outside of Africa end up allocated in one Branch, while the African populations end up in many branches (That's to be expected by the OOA theory, but is hard to understand from the oposing point of view)