Mitochondrial Eve -- Mother to us all?

Mitochondrial Eve is the name given to the idea of our most recent matrilineal decedent of mitochondrial DNA. In other words, she is the woman who all current living humans can trace their lineage back to, a distantly related mother to us all. This theory states that this common ancestor wasn't necessarily even close to the first woman alive, but that all other women's ancestors eventually did not produce female offspring and therefore their mitochondria line died off.

Tribes of Men:

Ashanti tribe in the area of Ghana

Dogon tribe of cliff-dwelling people in Mali Africa

Elderly Indian man showing signs of adaptation to a harsher, desert-like habitat
European woman (Queen Elizabeth) showing the loss of pigmentation from a habitat with less harsh UV sunlight
Native American Apache dressed in ceremonial clothing

Elderly Mexican woman

It is definitely possible for us to have all descended from a common ancestor. Migration and then many many years of adaptation to environments can explain the differences in culture and appearances of today's diverse people. I believe that in 1000 years, the people of earth will still be just as diverse as today, obviously with different, blended "races," but still diverse nonetheless.