It's been discussed on the board before but for anyone who hadn't heard of it, a Viking skeleton was found in Sweden in a full, classic warrior grave. The archaeologists were completely confounded when they discovered the skeleton was that of a woman. They spent ages trying to work out how this woman had somehow got into a warrior's grave, had the bones been mixed up, was this a wife or a slave of the warrior etc - all around the houses avoiding the possibility now put forward that the bloody warrior just was a woman.
Biology has nothing to do with gender and gender roles, gender happens in a social situation and is to do with living, functional relationships, activities and roles in a social context. And frankly no one but you and the people who interact with you has the faintest interest in your gender role, expression and opinions: they're not relevant outside of a social living context and can change drastically in very short spaces of time. Your biology is a fixed fact. Your gender is mostly in your head and the head of other people.