Friday, March 17, 2017

The Climate (and Genetics) Shaped Your Nose!

Noses undoubtedly, and sometimes unfortunately, get passed down from parent to offspring. This article sheds light on research showing how nose shapes are sculpted overtime in response to local conditions of our various ancestors. Although there are a wide variety and diversity of nose shapes, when we take a closer look we can see many similarities that happen to be linked to climate. The research conducted on this topic analyzed the dimensions, angles, and protrusions of 2,637 noses of individuals of four populations: North Europeans, South Asians, East Asians, and West Africans. By comparing this data to local climates and humidity levels of those different populations, researchers were able to define what nose shapes thrived in what areas. It is believed that natural selection called for narrow nostrils in cold/ dry climates because long narrow nostrils better humidify and warm the air in cold and dry areas.

When studying genetics, it is important to consider all external causes for a trait, condition, illness, etc. Our environment plays an important role in who we are and what we look like.

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