Comparative Biology

One possibility is that the chin was intended as a decoration in the style of peacock feathers, especially when accompanied by a beard in men. Roni Cuban. Photo: Israel Broadcasting Corporation

The mystery of the human chin: a unique feature of Homo sapiens that challenges the laws of evolution

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While many features of our bodies are explained by biological comparisons between different species, the chin remains an isolated case – with no parallel, no converging observations, and no definitive answer.
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