From The Independent:
The importance of grandmothers in the lives of their grandchildren is underlined in a study published today.
But the research showed that it was only granddaughters who were likely to do better with their paternal grandmothers involved in their early lives. In contrast, the presence of paternal grandmothers had a detrimental effect on the survival of their grandsons.
The discovery supports the idea that grandmothers have played an important role in human evolution and could explain why human females – alone among the animal kingdom – live well beyond their reproductive age.
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