Those who go on four legs

These people may have moved to ancient ways.( Photo: BBC )

5 Turkish siblings traveling by crawling on both arms and legs can provide science with a new perspective on human evolution.

Among them were 4 sisters and an older brother, aged 18 to 34. Professor Nicholas Humphrey, from the London School of Economics, believed that they could provide evidence for our ancestors. move from a four-way to a two-legged way. However, he also dismissed the notion that there is a "gene" dedicated to walking on two legs - or standing straight.

3 daughters and 1 son can only go on 4 limbs, but the fourth girl besides this strange walk can also switch to the usual two-legged way. Their other brother just walked on two legs, but it was very difficult.

The bottle at the hand showed that they were not fake.( Photo: BBC )

5 people live with parents and 5 other siblings. They were born in a state of brain damage. An MRI scan shows that they appear to have a type of cerebellar ataxia - a disease that affects balance and coordination of limbs.

However, scientists still have not agreed on the reason why these people go on more than 4 genera.

Professor Humphrey suggested that the movement methods of these Turks and our closest relatives were chimpanzees and gorillas, completely different. While the gorilla and delicate moves on the knuckles, the 5 brothers put weight on their wrists, and lifted their fingers off the ground.

" These people keep their fingers very smart, for example, girls in the family can still weave and crochet wool, " while the chimpanzees destroy the serious fingers with their way.

5 people with this strange walking style grew up in a remote area of ​​Turkey.( Photo: BBC )

Humphrey also added that the calluses on the hands of a family member demonstrate that their behavior is not fake. He judged that this could be the first type of human ancestors.

Humphrey said that brain abnormalities simply caused 5 brothers to restore the inherent patterns of our ancestors. " Due to special circumstances, they still keep the path of being an infant ," he said.

However, a research team led by Stefan Mundlos from the Max Planck Institute in Berlin, Germany, found that genetic abnormalities that cause this kind of strange movement may play a more important role in evolution. Professor Mundlos located the gene on chromosome 17 and conjectured that an important gene in the transition to the bipedal pathway may have been lost in these people.

Their family drama will be shown on BBC March 17.

T. An