Africa and out, Douglas Wallace
Interviewee: Douglas Wallace. Mitochondrial DNA pioneer Douglas Wallace speaks about the movement of different populations out of Africa. (DNAi Location: Applications > Human origins > Migrations > Videos > Africa and out)
Now, one of the interesting things that happened is, that at certain periods, as the climate changed, people were moved up into the northeastern part of Africa where more changes occurred, and then as the climate changed you can imagine there would be pressure to move outward, away from the climactic change and it is thought, that in fact that, caused people to move out of Africa across this sort of bridge between Eurasia and Africa. And there are really two exits, one across the Horn of Africa and the southern part of the Arabian peninsula and the other across the Sinai. Now one thought is that there was a very early out of Africa migration about 60,000 to 70,000 years ago that hugged the coast and went down through Indonesia, Papua, New Guinea, and down into Australia and the Australian aboriginals are in fact the descendants of that migration. Then it's very clear that a population here in this region of the world gave rise to certain distinctive lineages of mitochondrial DNA, which then in fact, were able to leave Africa and colonize Europe and Asia.
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Mitochondrial DNA pioneer Douglas Wallace explains the movement of different lineages of humans from Africa into Europe and Asia.
Mitochondrial DNA research pioneer Douglas Wallace speaks about mitochondrial DNA and theories of human evolution.
Mitochondrial DNA pioneer Douglas Wallace speaks about a possible migration of people from Europe to the Americas, 15,000 years ago.
Mitochondrial DNA pioneer Douglas Wallace talks about the migrations of people from Asia into the Americas.
Geneticist Stephen Oppenheimer talks about the mitochondrial DNA and Y chromosome lineages of our ancestors.
Geneticist Stephen Oppenheimer talks about the climatic and physical obstacles faced by humans migrating out of Africa.
Geneticist Douglas Wallace explains a method of mapping a population's history using the mutations accumulated by its members.
This illustration shows the two major mitochondrial DNA lineages. The lower branch includes only African populations. The upper branch has both African and non-African members.
Author Steve Olson talks about the stable and isolated history of the San people of Southern Africa, who are sometimes known as "Bushmen."
Geneticist Kenneth Kidd explains his study of human DNA variation in nuclear chromosomes.