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Exactly. Different populations of humans vary wildly by almost every physical trait, such as height, build, bone structure, skin, hair type, eye color, muscle

• sudosysgen 5y ago
  Muscle fiber variations across humans are pretty small. They're really only very noticeable as far as the extremes, or in quite small populations. Similarly, hair types are barely different. But to tell you a story, the village my ancestors lived in for centuries had people with smooth blond hair and people like me with extremely stiff black hair. Same for eye color. Anyways, I digress, these are generally single-gene variations which is why you will find most of the variation in most populations. Height and build is an interesting one. For most of history heights were very similar across populations. Actually, the only exception we know of were Anglo-Saxon settlers, and some peoples in South-East Asia. This suggests that people even in extremely remote places had incredibly similar evolutionary pressures that led to almost identical heights. But nowadays, the specificities of the impact on a changing diet are different [https://www.tandfonline.com/doi/abs/10.1080/20780389.2012.657489 https://www.tandfonline.com/doi/abs/10.1080/20780389.2012.65...]. Skin is really the biggest one, because Vitamin-D deficiency and skin cancer are huge evolutionary pressures. But as we've seen, otherwise it's pretty clear humans evolved in broadly similar environments and found very similar tradeoffs. This is especially true for intelligence where the biggest load for intelligence was social interactions, and where social structures are very similar.