Skulls of early humans carry signs of inbreedingBreaking News
tags: China, ancestry, human remains
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
- A Trump book riddled with falsehoods will no longer be sold by the National History Museum
- 'America First,' a phrase with a loaded anti-Semitic and isolationist history
- These presidents all said they were going to change America. How’d that work out?
- Presidents Have Less Power Over the Economy Than You Might Think
- Harry Middleton, who led LBJ library and released presidential tapes, dies at 95