The Family: A Proclamation to the World "Gender is an essential characteristic of individual premortal, mortal, and eternal identity and purpose. ... By divine design, fathers are to preside over their families in love and righteousness and are responsible to provide the necessities of life and protection for their families. Mothers are primarily responsible for the nurture of their children. In these sacred responsibilities, fathers and mothers are obligated to help one another as equal partners."
In the family there are many different roles that are played by the mother, father or both. These roles primarily consist of: protector, provider, peacemaker, and nurturer.
Fathers are generally the protectors and providers by divine design. However there are times such as death or a long absents where the mother, a relative, or even a child will have to step up to the plate.
Mothers are generally the peacemakers and the nurturer by their part in the great plan. Though there are many instances where the mother is absent and then those position are then filled by the father, a child or another family member.