Business of Life

"Queen Bee" syndrome

There is growing evidence that female mammals with very high degrees of testosterone are more likely to give birth to males.

TOUGH, confident females may be more likely to give birth to sons than women with less pushy personalities, researchers have found.
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The discovery of the “queen bee” syndrome in mammals is the latest in a growing body of work that challenges the traditional view that a baby’s sex is determined by chance.
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Previous research by Grant has found that men with masculine jobs — police officers, soldiers and butchers — are more likely to produce girls.