According to evolutionary theory, women living in poorer communities are predisposed to have daughters to ensure survival of the family line because the men are at greater risk of dying younger.

 
  • 根据进化论,女人生活在比较贫困的族群中,生女儿机率较高,以确保家族能代代相传,因为男人英年早逝的风险较高。
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