Skulls of early humans carry telltale signs of inbreedingBreaking News
tags: human evolution, inbreeding, incest, early humans
Buried for 100,000 years at Xujiayao in the Nihewan Basin of northern China, the recovered skull pieces of an early human exhibit a now-rare congenital deformation that indicates inbreeding might well have been common among our ancestors, new research from the Chinese Academy of Sciences and Washington University in St. Louis suggests.
The skull, known as Xujiayao 11, has an unusual perforation through the top of the brain case -- an enlarged parietal foramen (EPF) or "hole in the skull" -- that is consistent with modern humans diagnosed with a rare genetic mutation in the homeobox genes ALX4 on chromosome 11 and MSX2 on chromosome 5.
These specific genetic mutations interfere with bone formation and prevent the closure of small holes in the back of the prenatal braincase, a process that is normally completed within the first five months of fetal development. It occurs in about one out of every 25,000 modern human births....
comments powered by Disqus
- Rubio Surges Into Second In New Hampshire
- Branstad Says Cruz Ran ‘Unethical’ Campaign
- Christie Highlights Santorum’s Endorsement of Rubio
- Portman Comes Out Against Trade Deal
- Megyn Kelly Gets a Book Deal
- A Big List of the Bad Things Clinton Has Done
- An Unambiguous Sign Sanders Won Last Night’s Debate
- Still Friends at the End
- Quote of the Day
- Trump Still Leads as Clinton Slips
- Clinton Can’t Shake Image as Wall Street’s Friend
- Maddow Doesn’t See Sanders Winning
- Why Does the Media Still Shield Chelsea Clinton?
- Bush Jokes His Mother May Have Abused Him
- Rubio Closes the Gap in New Hampshire
- Humans Hard-Wired to Teach, Anthropologist Says
- Parents outraged after students shown ‘white guilt’ cartoon for Black History Month
- Maryland is once again considering retiring its state song
- One of the last remaining Nazis goes on trial in Germany
- Inside story finally told of the young US diplomat who cracked the case of the murder of 4 nuns in El Salvador in 1980
- Historian at the center of Sanders-Clinton debate
- James Loewen Says Additional Baltimore Confederate Statues Should be Removed
- NYT History Book Reviews: Who Got Noticed this Week?
- A historian’s advice to students thinking of getting a PhD in a tough economic climate
- German historian Heinz Richter cleared of charges