Of course, everyone has their duties in the family. For example, the father in the family often earns money, it is almost always hard work. Moms usually are busy with the housework: cook, clean the house. Children have a simple duty: to wash the dishes, to dust the furniture. 
I have responsibilities not very much, but I'm getting older — and getting bigger. In the morning I have to make the bed. If no one is home, you have to prepare something to eat, mainly to heat up that is ready to. Came home from school, I eat lunch, then wipe furniture from a dust, sweeping and, if necessary, my floor in my room. Then, if necessary, go shopping: bread, milk, eggs and the like. . 
During the weekend of course and it becomes more. First, on Saturday we have to go to the market and to help the mother carry the bags. On this day, we buy food for the whole week, and already during the week then we will buy the Essentials: bread, milk, sour cream, and the like. Then at home help mom after washing, hang clothes on the balcony. Here are the responsibilities I have. 
In children have long had certain responsibilities, and more than now, because there were no mechanisms and therefore children with childhood had to chop wood for the stove, to carry water from the well and the like. their parents too for the same reason was over-loaded homework. 
So family responsibilities have long existed, exist now, everyone has them that lives alone or with family.