Correct. Genitalia actually does not always indicate the sex (use of the word gender is incorrect) of a person. It is the xxx and xy chromosomes that tell the truth, and no surgeon’s knife can change that.
Yet that was the standard for thousands of years.
It is the xxx and xy chromosomes that tell the truth, and no surgeon’s knife can change that.
SO.... are there only two 'combinations' in the 23rd chromosome ?