advertisement
21 September 2012

Khoi-San genetics shed light on evolution

The Khoi-San peoples of southern Africa are descendants of the earliest diversification event in human history, a new study shows.

0

The Khoi-San peoples of southern Africa are descendants of the earliest diversification event in human history, a new study shows. This event occurred about 100 000 years ago, well before modern humans began migrating out of Africa.

For the study, researchers looked at about 220 people from different regions in southern Africa and analysed about 2.3 million DNA variants per person. The findings were published online in the journal Science.

What the research found

The team of international scientists also found unexpected variance among Khoi-San groups. For example, they estimated that the San populations from northern Namibia and Angola separated from the Khoi and San populations in South Africa perhaps 25 000 to 40 000 years ago.

The major divergences among different groups of people in Africa have important implications and consequences in terms of human evolutionary history, said Mattias Jakobsson of Uppsala University in Sweden.

The deep structure and patterns of genetic variation suggest a complex population history among groups of people in Africa.

"The human population has been structured for a long time and it is possible that modern humans emerged from a non-homogeneous group," Jakobsson said in a University of the Witwatersrand news release.

Read more:
Ancient genome tied to humans

More information

The Smithsonian National Museum of Natural History has more about human evolution.


(Copyright © 2012 HealthDay. All rights reserved.)

 

 
advertisement

Get a quote

advertisement

Read Health24’s Comments Policy

Comment on this story
0 comments
Add your comment
Comment 0 characters remaining

Live healthier

Winter Wellness »

Boost winter health Happy feet in winter Don’t become a winter blimp

Tips to stay fit and healthy in winter

When it's cold it's easy to pick up the coughs and sniffles, and it's even easier to indulge in comfort foods. Don't !

Vitamin wise »

Vitamins for HIV What to eat for vitamin B? Cut down on vitamins

Get your vitamins right

Find out which vitamin to use for which condition. Ask our Vitamin expert.