DNA, the molecular basis for inheritance. Each strand of DNA is a chain of nucleotides, matching each other in the center to form what look like rungs on a twisted ladder.
The Genographic Project
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search "The Genographic Project" on JSTOR
"In the grip of an Ice Age, the Earth's temperature dropped, locking the world's moisture into giant glaciers and bringing intense drought to Saharan Africa. As herds of thirsty animals wandered northeast off the African continent searching for water, human hunters, our ancestors, followed."
"JOURNEY OF MAN tells the remarkable story of the human journey out of Africa and into the rest of the world, tracing history through evidence uncovered in the Y-chromosome of man's DNA. Traversing six continents, the film takes viewers on a fascinating journey into the hidden world of their ancestry and offers a modern look at our ancestor's lives."
Travelling by helicopter and army tank, Spencer Wells visited the Arctic Circle to meet the nomadic Chukchi.
The Human Famly Tree HomePage