You will see that we discuss the anatomy of the sexual organs in a binary manner, following a definition of ‘anatomical sex’ (the physical structure including chromosomes, genes and their products) as the most frequent anatomical variants, male and female. We are aware that there are anatomical variants that do not correspond to either the male or female anatomical variants of sex.
With this nomenclature we explicitly acknowledge the differentiation between the terms sex and gender. The latter is a psychological, social and cultural construct, including self-identification; this is independent of physical structure, chromosomes, or genes.