What I learned.
I learned that you can identify your own gender by what your respective culture defines as gender. For example, if your culture is simliar to that of the American 1950's culture, where men work and bring home the money and women take care of the family and home; if you are a female by sex and you work the farm and wear the slacks you can identify as male gendered of omnigendered if you fill both roles of fieldworker and homemaker. Concluding from this, gender can be nothing other than a role.