This post has already been read 726 times!
The noses can be bulbous, foxy or pointy, but why do human NOSE completely different from each other? – did it come across to your mind? According to a new study, it could have something to do with how humans have grown to live in the certain seasons.
The researchers found that wider noses are more usually found among the people who live in the warm and humid climates, and just like that narrower noses are normally found among the people living in the cold and dry climates, through the study.
The study said- why nose shapes are so varied around the world? It could be explained by one possible explanation and that is the genetic drift, which is a mechanism of growth through which the frequency of certain genes drifting upward or downward at randomly, leading to the measurable variations among populations that don’t frequently mingle. Genetic drift has played a drastic role in human evolution,
And about the evolution of some human traits, well, it’s probably another mechanism, natural selection, also played a role too, through the researcher’s pan. In other words, the evolution of some traits occurred not just because of a random drift of genes, but also it happened because in the response to outside factors too. Just like the varied color in human skin founded because in the response to the ultraviolet radiation.
Researchers used 3D facial imaging, to see what mechanism likely impacted nose shape along with measure the noses of more than 2,600 participants from the West Africa, South Asia, and East Asia as well as the Northern Europe. The researchers examine the noses by measuring the nostril width, the distance between the nostrils, nose height, nose-ridge length, nose protrusion and nostril area. And the researchers estimated each participant’s ancestry through the genetic testing as well.
And the researchers found that two nose measurements appeared to be linked to climate; those two are nostril width and the width of the nose at its base. It turns out the People with wider nostrils were more probably live in hot and humid climates, other hand people with narrower nostrils were more possibly live in the cold and dry climates, According to what study says.