Another common cause of being intersex is the crossing over of the SRY from the Y chromosome to the X chromosome during meiosis.The SRY is then activated in only certain areas, causing development of testes in some areas by beginning a series of events starting with the upregulation of SOX9, and in other areas not being active (causing the growth of ovarian tissues).
Arthropods are the phylum with the largest number of species.
which derives from Hermaphroditus (Ἑρμαφρόδιτος), the son of Hermes and Aphrodite in Greek mythology.
According to Ovid, he fused with the nymph Salmacis resulting in one individual possessing physical traits of male and female sexes; Alexander ab Alexandro stated, using the term hermaphrodite, that the people who bore the sexes of both man and woman were regarded by the Athenians and the Romans as monsters, and thrown into the sea at Athens and into the Tiber at Rome.
One possible pathophysiologic explanation of intersex in humans is a parthenogenetic division of a haploid ovum into two haploid ova.
Upon fertilization of the two ova by two sperm cells (one carrying an X and the other carrying a Y chromosome), the two fertilized ova are then fused together resulting in a person having dual genitalial, gonadal (ovotestes) and genetic sex.It can be difficult to determine the sex of wild spotted hyenas until sexual maturity, when they may become pregnant.