
Zhou Chang-Xing
Overlord
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Studies in 2014 found that gene markers associated with height differences differed between different populations in a way that inversely mirrored gene markers associated with intelligence differences. This contrasted to the (very weak) positive correlation found within populations, where taller people on average have a small IQ advantage over shorter people. "This suggests that the environments that selected for higher intelligence were also more advantageous for shorter people. A possible explanation of this phenomenon can be inferred from Allen‟s rule, which posits that endotherms from colder climates usually have shorter limbs than the equivalent animals from warmer climates. This is based on the principle that in cold climates, the greater the exposed surface area, the greater the loss of heat and therefore energy. Animals in cold climates need to conserve as much energy as possible. A low surface area to volume ratio helps to conserve heat as there is a smaller surface area for the heat to pass through. Probably also human populations follow Allen‟s rule".
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