Why is the Neanderthal right hand twice as big as the left hand?

New research by anthropologists has pointed out that the cause of Neanderthal's right arm has extraordinary power not because they use their right hand to hold a hunting spear but to scratch the animal's clothing and make shelter.

Through the analysis of the Neanderthal right arm bones have very long features and there are muscular depressions that show that they have very strong right arm. If the right-handed modernist has a symmetry difference between right and left hand, about 4 to 13%, but the Neanderthals alone are 50% off, anthropologist Colin Shaw at Cambridge University said.

The Neanderthal's right arm is strong
weak due to shaving the skin and not throwing spears.

Some studies have previously explained that the Neanderthal's right arm is exceptionally strong because they use the right hand to hunt animals. But through new research, the scientists found that the action of the spear acts mainly on the muscles on the left side of the body, while shaving the skin affects the muscles on the right side of the Neanderthal body.

In addition, when considering the shape of modern human hand bones, they have to throw spears constantly, while the Neanderthals are rectangular. Therefore, the researchers surmised that the Neanderthal's right hand flourished due to the activity of scraping animal skin rather than throwing spears to hunt animals.

It is known that Neanderthals are the closest relatives of extinct humans, have smaller brains than modern people, use stone tools to ignite, live into social groups, and practice burial of dead people and wear fur coat. Some genetic studies also found that Neanderthals had mated with modern humans.

Reference: Foxnews