Biological sex: determined by x and y chromosomes (xx for female); chromosomes dictate the formation of sexual organs with corresponding hormones. Individuals who do not conform to gender expectations are often not treated very well o. Transgendered people: individuals who want to alter their gender by changing their body/appearance; defy conventional gender norms. Transsexual people: individuals who feel like they have been born into the wrong body; they identify with and want to live as a person of the opposite sex. Society"s rigid definition of male and female does not recognize/validate intermediate sexes and classifies people like that as being sick . Gender roles are entirely natural; does not always agree with biological sex orientation. Sexuality = activities that lead to erotic arousal. Sexual scripts dictate to us what we should find attractive or not etc ; linked to gender roles. Compulsory heterosexuality: assumption that individuals should only desire members of opposite sex o.