Conflicts and Problems with Out of Africa
Problems with the “Out of Africa” Hypothesis
Computing mtDNA mutation rates
By looking at how many new mutations occurred from Europe to
North America, we can find mtDNA mutation rates
2-4% of our mtDNA changes per million years
Based on mtDNA, there are problems with computing the
coalescence point Observed mutation rates:
Based on direct observation of modern human genetics, the rate
of mtDNA change (random mutations) are 24x higher than those
estimated based on fossil studies
At this rate, all AMH mtDNA coalesces at 6,500 bp!
Construction mtDNA genetic trees?
A Third Potential Explanation:
“Weak Garden of Eden” hypothesis believes that: