Gender Differences are the differences between genders. Obviously.
Unfortunately, Conservatives (most notably Islamic, American and others) have attempted to distort these minor differences so that they fit their goals. For example, they have claimed that women are inferior to men in many aspects and therefore should not have equal career opportunities. This punch in the face of Democracy has actually been effective, as women are often discriminated in their workplaces, and are not allowed certain positions in companies or organisations.