Answer:
The likelihood that children will have a closer relationship with their maternal grandparents and especially with their maternal grandmother than with their paternal grandparents.
The core of their societies is female. In humans, this means that women inherit family property, children belong to their mothers' lineages, or newly-married couples live in close proximity to the wife's kin. Even in these “matrilineal” societies, anthropologists have claimed that men are more important than women.
