Biologists use genetic relatedness between family members to explain the evolution of many
behavioural and developmental traits in humans, including altruism, kin investment and
longevity. Women's post-menopausal longevity in particular is linked to genetic relatedness
between family members. According to the 'grandmother hypothesis', post-menopausal
women can increase their genetic contribution to future generations by increasing the
survivorship of their grandchildren. While some demographic studies have found evidence …

Biologists use genetic relatedness between family members to explain the evolution of many
behavioural and developmental traits in humans, including altruism, kin investment and
longevity. Women's postmenopausal longevity in particular is linked to genetic relatedness
between family members. According to the 'grandmother hypothesis', post-menopausal
women can increase their genetic contribution to future generations by increasing the
survivorship of their grandchildren. While some demographic studies have found evidence …