993 resultados para Rothschild, Nathaniel vonRothschild, Nathaniel vonNathanielRothschildvon


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par G. Dairnvaell

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Egon Caesar Conte Corti

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von M. E. Ravage

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von Heinrich Döring

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von Christian Wilhelm Berghoeffer

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Tropical rainforest hunter-gatherer populations worldwide share the pygmy phenotype, or small human body size. The evolutionary history of this phenotype is largely unknown. Here we studied DNA from the Batwa, a rainforest hunter-gatherer population from east central Africa, to identify regions of the Batwa genome that underlie the pygmy phenotype. We then performed population genomic analyses to study the evolution of these regions, including comparisons with the Baka, a west central African rainforest hunter-gatherer population. We conclude that the pygmy phenotype likely arose due to positive natural selection and that it arose possibly multiple times within Africa. These results support longstanding anthropological hypotheses that small body size confers an important selective advantage for human rainforest hunter-gatherers.

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by Cecil Roth

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[Damascène Morgand et Charles Fatout]