Estudo associa o destro humano ao bipedalismo e à expansão cerebral

Pesquisadores da Universidade de Oxford descobriram que andar ereto e cérebros maiores provavelmente impulsionaram a forte preferência pela mão direita observada nos humanos modernos. As descobertas vêm de uma análise de espécies de primatas e hominídeos extintos.

Uma equipe liderada pelo Dr. Thomas A. Püschel examinou dados de 2.025 macacos e símios de 41 espécies. Eles usaram modelos bayesianos para testar fatores como o tamanho do cérebro e a proporção do comprimento do braço em relação à perna, um marcador do movimento bípede. Uma vez que essas características foram incluídas, os humanos deixaram de se destacar como uma exceção evolutiva entre os primatas.

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