Hermaphroditism is also found in some fish species and to a lesser degree in other vertebrates. Most plants are also hermaphrodites. Historically, the term hermaphrodite has also been used to describe ambiguous genitalia and gonadal mosaicism in individuals of gonochoristic species, especially human beings. The word intersex has come into preferred usage for humans, since the word hermaphrodite is considered to be misleading and stigmatizing,   as well as "scientifically specious and clinically problematic. A rough estimate of the number of hermaphroditic animal species is 65, Although the current estimated total number of animal species is about 7.
Male or female? Babies born on the sliding sex scale - BBC News
By Jared Diamond Monday, June 01, Barbara grew up as an apparently normal girl enjoying a happy childhood. As her teenage years approached, she looked forward to experiencing the same sexual development she saw in older girls. By the age of 14 she was really worried: she had not yet menstruated and her breasts showed no signs of growth. What she did have was a pain in her left groin that eventually subsided, only to be replaced by the appearance of a mass in the left side of her labia. With growing shock, she felt her voice dropping, her facial hair growing, and her clitoris enlarging to become more and more like a penis. By now she had become convinced that she was really a boy and that the mysteriously shifting mass within her was in actuality a testis.
Actress Jamie Lee Curtis acknowledged in an interview that she was born with both male and female sex organs. What to make of the child of two successful and famous actors who grows up to achieve an equal measure of fame in the same field? What if this gal has a boyish-sounding name and adopts children rather than bears her own?
The 18 year-old is facing a humiliating gender verification test after becoming a world champion with the fifth fastest m time in history at the World Athletics Championships in Berlin. The International Association of Athletics Federations requested the gender test on Semenya three weeks ago after she ran a time of IAAF spokesman Nick Davies confirmed the tests were taking place, though he said the results would not be confirmed for several weeks.