(9/22 Edit for Clarification) Ok, maybe gender... But is sex is a social construct? Most WGST majors will say - maybe. Because chromosomes, hormones, and physical differences were not studied without prejudice. Experts began research with the assumption that there are only two sexes. Had that not been the case, we might have a whole new approach to defining a person's biological sex.

If you're interested in the topic I suggest reading "Sexing the Body" by Anne Fausto-Sterling.