Gender systems can affect what personal experience of one's own gender and how they fit in society?
Gender identity Gender identity is one's personal experience of one's own gender. Gender identity can correlate with assigned sex at birth, or can differ from it completely. All societies have a set of gender categories that can serve as the basis of the formation of a person's social identity in relation to other members of society. In most societies, there is a basic division between gender attributes assigned to males and females, a gender binary to which most people adhere and which includes expectations of masculinity and femininity in all aspects of sex and gender: biological sex, gender identity, and gender expression. In all societies, some individuals do not identify with some (or all) of the aspects of gender that are assigned to their biological sex; some of those individuals are transgender or genderqueer. Some societies have third gender categories.
Gender in speculative fiction Gender has been an important theme explored in speculative fiction. The genres that make up speculative fiction (SF) , science fiction, fantasy, supernatural horror, superhero fiction and related genres (utopian literature), have always offered the opportunity for writers to explore social conventions, including gender, gender roles, and beliefs about gender. Like all literary forms, the science fiction genre reflects the popular perceptions of the eras in which individual creators were writing; and those creators' responses to gender stereotypes and gender roles.