Nature is a remarkable thing.
Take the phenomenon of “gynandromorphism,” which is where an organism is born with both male and female elements. It can be seen the most dramatically in creatures like birds, crustaceans and insects where male and female counterparts are so visually distinct. A Google search of “gynandromorphism” and “butterflies” yields a dazzling array of results and was the inspiration for my most recently completed painting.
In humans this expression of male and female elements can be more complicated. Sometimes it presents as something visible, but other times it does not.
Either way it is no less rare and remarkable than a bi-gender butterfly.