Gay men and lesbian women continue to define themselves as men and women while maintaining primary interest in people of the same gender. There is a conceptual middle ground, almost a crossing between the continuum of gender and sexuality. The existence of people who openly cross this line is certain. Gender identity theories are complex and explanations range from those rooted in psychological, sociological, and biological interpretations, to the personal anecdotes of those whose life experiences have led them to examine the concept of gender. Gender Assignment Sex is generally referred to as the biological category involving the existence of certain genitalia and reproductive capabilities.
Gender is a category which currently maintains two supposed distinct and opposing components.
The truth is that many variations in sex exist on a purely biological level. Most people with this identify as female however they do not develop breasts nor are they fertile. People with Klinefelter's vary in their gender identity. Puberty may result in breast development but menstruation does not occur. Although they have XY chromosomes, these people mainly identify as female.