The Americans Watson and Crick's discovery of the double helix of DNA had led to greater understancing of genetics. And now, it can even be used to trace humanity's origins. - ariel
http://www.dailygalaxy.com/my_weblog/2010/08/the-1st-ancestor-of-all-living-humans-existed-200000-years-ago.html
http://www.dailygalaxy.com/my_weblog/2010/08/the-1st-ancestor-of-all-living-humans-existed-200000-years-ago.html





