human evolution

human migration and evolution

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Chapter 20

Haplogroup is a genetic population group of people who share a common ancestor on the patriline or the matriline. 

A maternal haplogroup is a family of mitochondrial DNA (mtDNA) that traces back to a single common ancestor. Your maternal haplogroup assignment is based on your mitochondrial DNA, which you inherited from your mother.

In human genetics, the Mitochondrial Eve is the matrilineal most recent common ancestor (MRCA) of all currently living humans, the most recent woman from whom all living humans descend in an unbroken line purely through their mothers, and through the mothers of those mothers, back until all lines converge on one woman.​

Estimates on the age of this split ranged at around 150,000 years ago

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that theory on human evolution

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UV and skin tone

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Could Increasing the Melanin In Your Skin Protect You From Cancer?

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movement of people TO THE AMERICAS from all over the world 

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Trans Atlantic Currents move ships from West Africa to the area where we find the Olmec Civilization and other Ancient Civilizations  

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