<P> A nuclear family , elementary family or conjugal family is a family group consisting of two parents and their children ( one or more ) . It is in contrast to a single - parent family , to the larger extended family , and to a family with more than two parents . Nuclear families typically center on a married couple ; the nuclear family may have any number of children . There are differences in definition among observers ; some definitions allow only biological children that are full - blood siblings , but others allow for a stepparent and any mix of dependent children including stepchildren and adopted children . </P>
<P> A nuclear family , elementary family or conjugal family is a family group consisting of two parents and their children ( one or more ) . It is in contrast to a single - parent family , to the larger extended family , and to a family with more than two parents . Nuclear families typically center on a married couple ; the nuclear family may have any number of children . There are differences in definition among observers ; some definitions allow only biological children that are full - blood siblings , but others allow for a stepparent and any mix of dependent children including stepchildren and adopted children . </P>
how many members does a nuclear family have
how many members does a nuclear family have
two parents their children ( one or more )
two parents their children ( one or more )