People in different countries have different average heights. For example, Wikipedia's article on human height states that Australian men have an average height of 177.8 cm, and Australian women 163.8 cm, whereas Japanese men have an average height of 170.7 cm, and Japanese women 158 cm.
Are these differences in height due to environmental differences between people in different countries, or does genetic differences play a role?
In particular, are Asian people (people from Far East countries like Japan) genetically predisposed to be on average shorter than people who are of European descent?
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