Being intersex is not defined by one single set of sex characteristics.
Intersex people can have different chromosomal patterns. Some intersex people may have XX or XY chromosomes; others may have sex chromosome variations, for example XXY, X, XXX, XYY, as well as mosaic variants in which different chromosomal patterns are present in different cells of the body, for example 45,X/46,XY. Chromosomes are only one characteristic of sex and, by themselves, do not always make it possible to understand what hormones, gonads, internal reproductive organs, or external sex organs a person has.
Gonads, or sex glands, can also be different in intersex people. Gonads include ovaries, testes, ovotestis, meaning a gonad containing ovarian and testicular tissue, as well as gonads with atypical structure or development. In some intersex people, gonads may produce sex hormones or germ cells; in others, their function may be reduced or absent. Gonads may be located in the scrotum, inguinal canal, pelvis, abdominal cavity, or another place. The external appearance of the genitals does not always make it possible to understand what gonads a person has, how they are structured, or how they function.
Finally, the sex organs and genitals of intersex people can look different, even among people with the same variation. In many intersex people, genitals look typically male or typically female. Other intersex people may have variations in external or internal sex organs, for example features of the size or form of the clitoris or penis, the location of the urethral opening, or the structure of the vagina, scrotum, labia, gonads, or internal reproductive organs.
People often ask what “intersex chromosomes”, “intersex gonads”, “intersex genitals”, or “intersex sex organs” can be like or what they look like. However, it is important to remember that a person’s being intersex does not make their body, medical history, chromosomes, genitals, or experiences something others are entitled to ask about. Questions about sex characteristics, diagnoses, surgeries, reproductive capacity, or the appearance of genitals concern personal and medical information. It is appropriate to ask them only when the intersex person themselves wants to talk about this or when this information is genuinely necessary to provide help, support, or a medical service. Respectful communication begins with recognizing a person’s boundaries: interest in the topic of being intersex can be satisfied through open educational materials, rather than through questions about a specific person’s body.