What gender dominates most?
Most people with gender-ambiguous sexual organs identify strongly with one gender (both genetically and personally). However, like people without gender-ambiguous sexual organs, some people don't feel that they fit into the classic gender binary. These people usually go the restroom that their outer appearance is most reflective of or that they feel most comfortable in. No matter how someone identifies, most people go to the bathroom to relieve themselves--not for nefarious activities.
It depends on the context. Gender is often used interchangeably with the word sex to refer to what physical sexual characteristics and body parts you have. In transsexual and transgender circles, the word sex refers to the body, and the word gender refers to your nature and who you are. A new understanding in such communities splits this usage of gender into gender identity and gender role. So gender identity refers to who you are…
Gender Superiority is considered as the acknowledgement that the majority of a gender is better than the other in a given area. This doesn't not mean that all persons belonging to a specific gender are better than the other. e.g. Most women are considered better caregivers than men while most men are considered better with tools or handiwork than women.