The nose is an integral part of our lives with its vital functions such as breathing and smelling. Although many people’s nose shapes begin to look similar with changes in their aesthetic perceptions, nose structure varies greatly from person to person.
For example white people’s nostrils compared to black people it gets smaller. What is the reason behind this diversity?
our nose shape Are you wondering about this important determining factor?
We generally think that nose structure is genetic.
Research on the subject, related to nose structure It reveals deeper and more interesting findings. For example, imagine: Caucasians have narrow and long noses, African Americans have flatter noses, and Asians have wide and round noses…
When we look at the nose structures in different geographies, we see that this diversity is not only genetic; at the same time from environmental factors We see that it is also affected.
Research conducted in recent years reveals how nose shape is related to environmental conditions.
2016’da Nature Communications In a study published in the journal, it was determined that the genes that determine nose width, nasal bone and nose tip shape are GLI3, PAX1, RUNX2 and DCHS2. It has also been suggested that these genes drive genetic changes that may explain how nose shape adapts to environmental conditions.
In other words, in order to adapt to cold climates, It was observed that the nostrils formed on their own. Sounds incredible, doesn’t it?
In another study, 3D facial modeling and measurements were taken of 476 volunteers of South Asian, East Asian, West African and Northern European origin.
Research, Only two of the seven features in nose shape change. and reveals that these changes occur through natural selection rather than genetics. These findings also show us that nose shape is linked to the environmental adaptation process and may be a product of natural selection.
To put it more clearly, the narrow nostril regulates the air flow in cold and dry climates. It provides better heating and humidification. This helps protect the respiratory tract in cold weather conditions.
On the other hand, in hot and humid climates wider nostrilsWhile allowing air to pass through more easily, it protects the intranasal mucosa by expelling excess moisture. So, as you can see, nostrils cover much more than just genetics.
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