Why do people walk upright?

In short, the secret lies in the aquarium. They are – unlike chimpanzees and gorillas, for example – more widely spaced, which in turn makes it easier for us to maintain balance. The authors of these studies shed light on the moment when the pelvis forms during pregnancy. They also identified the genes and genetic sequences behind this process.

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Ultimately, further developments could elucidate the genetic origin of the bipedal. However, the benefits do not end there, as there is also talk of developing methods of treatment or prediction of disorders of the hip joint, for example dysplasia or inflammation.

According to the analyzes by Capellini and the rest of the team, several important features of the way people move or deliver babies emerge at 6-8 weeks of gestation. It has to do with the characteristics of the aquarium that are unique to humans, such as its curved and pool-like shape. Significant changes in this regard occur when the bones are still cartilaginous. Due to its flexibility, it can easily bend, expand and grow. Interestingly, even when other cartilages begin to take the form of bone, those attached to the pelvis are still in their original form.

Humans, unlike apes, are able to move upright for long periods of time

Using RNA sequencing to identify the genes responsible for pelvic formation and slowing ossification, scientists have discovered hundreds of potential candidates. They also compared the anatomy of humans, chimpanzees, and gorillas. As they note, the shorter and wider direction of our shoulder blades means we don’t have to shift the weight forward and use our knuckles to walk or balance easier. Moreover, it facilitates the expansion of the birth canal and bringing offspring into the world.

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To clarify when the hip bones and pelvic components that make up the birth canal began to form, the researchers examined fetuses as young as four to twelve weeks old under a microscope. They then compared samples from the developing human and mouse pelvis. The goal was to identify the genes responsible for pelvic formation. With further progress, scientists would like to help people who have problems with the functioning of this part of the body.

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