>>29
What about >>19's example, then?

"An example of the problem with chromosomal definition would be a woman with Complete Androgen Insensitivity Syndrome (CAIS), who would have a 46,XY karyotype, which is typically male. Although she may have been legally registered as female on her birth certificate, been raised as a female her entire life, have engaged in typical heterosexual female relationships, and may even have married before the status of her condition was known, using the chromosomal definition of sex could prevent or annul the marriage of a woman with this condition to a man, and similarly allow her to legally marry another woman. These same issues were faced by the IOC to determine who qualified as a female for the women's competitions."

What is someone who by chromosomes should have been male, but wound up not growing a penis?