Arctic Inuits Have Caveman Genes That Help Them Survive In The Cold

Posted: Dec 21 2016, 8:06am CST | by , in News | Latest Science News

 

Arctic Inuits Have Caveman Genes That Help Them Survive in the Cold
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  • Inuit have Caveman Genes that Allow them to Survive in the Frigid Arctic Zone
 

Apparently it turns out to be the case that the Inuit have caveman genes that allow them to survive in the frigid Arctic zone.

Inuit people in Greenland may have gotten the genetic materials in their DNA that helped their ancestors survive the cold weather.

These selfsame genes allowed the Denisovans that swarmed the Siberian region almost 40,000 years ago to withstand the extreme temperatures of the previous Ice Age. This discovery also points towards interbreeding between human beings of that era and a now extinct type of hominin. 

Greenland, Canada and Alaska have temperatures that that go as low as 30 degrees Celsius. The Inuits live under these frigid conditions on a seafood diet.

This is due to their bodies having adapted to the chilly weather after thousands of years of living in the area. A special type of body fat is produced in their bodies which allows them to weather the conditions.

The researchers wanted to know how they did this in the first place. The genes of 200 Greenlandic Inuits had ancient DNA from both Denisovans and Neanderthals, according to Mail Online.  

Two genes, TBX15 and WARS2, had a perfect match with Denisovan DNA. TBX15 affects the human body’s reaction to chilly weather. It also affects the distribution of fat in the body.

Both genes play a role in skin and fat tissue. The site in the DNA where they are extant is programmed in a different way from both Neanderthals and modern homo sapiens.

The introduced variant of the different gene in the Inuit DNA may have led to their evolution in the direction of surviving cold weather conditions. A limited amount of people of Eurasia have the same gene. However, it is more common in the Inuits and Native Americans. 

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