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Strong mothers bear more sons in rural Ethiopia

7 Aug 2003

Abstract excerpt

In humans, there is evidence that the physiological cost to the mother of bearing sons is greater than of bearing daughters. Parents should manipulate the sex of offspring born in response to resource availability to maximize their reproductive success. Here, we demonstrate that, within a rural food-stressed community in southern Ethiopia, there is a strong association between the sex of the most recent birth and...

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Identifiers

PMID: 12952651
DOI: 10.1098/rsbl.2003.0031

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