Researchers say they may have discovered the mutation that caused the earliest humans to branch off from their apelike ancestors, a gene that led to smaller, weaker jaws and bigger brains. Smaller jaws would have changed the structure of the skull by eliminating thick muscles that anchored a huge jaw to the crown of the head. The change would have allowed the cranium to grow larger and led to the growth of a bigger brain …
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showed last 75 words of 931 total
…are the chances of that?" Bibliography: Ananthaswamy, Anil "Early humans swapped bite for brain" 24 March 2004 < http://www.newscientist.com/news/news.jsp?id=ns99994817> Verrengia, Joseph. "Missing link found in gene mutation?" 24 March 2004 <Tab/>< http://msnbc.msn.com/id/4593822/> Hopkin, Michael "Jaw-dropping theory of human evolution" 25 March 2004 <Tab/>< http://www.nature.com/nsu/040322/040322-9.html>