Intersex describes a wide variety of combinations of what are considered male and female biology.
Clinically, medicine currently describes intersex people as having disorders of sex development, a term vigorously contested.
have criticized medical interventions designed to make intersex bodies more typically male or female.
Intersex is in some caused by unusual sex hormones; the unusual hormones may be caused by an atypical set of sex chromosomes.
One possible pathophysiologic explanation of intersex in humans is a parthenogenetic division of a haploid ovum into two haploid ova.
In these groups, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the "female" or "male".