Biology presents societies with certain limits with which each much deal.
For example, biologically a human infant is very dependent for an extended period of time. A culture must delegate the responsibility for the care of new born infants to some one - otherwise the survival of the group is doomed. Culture can affect the biological order as well. For example, there definitely is a biological sex drive - but culture has much to say about with whom, when and how one fulfills that drive. There is a tribe in India slowly dying out from excessive inbreeding.