- "An intersex person may have the biological attributes of both sexes or lack some of the biological attributes considered necessary to be defined as one or the other sex."
There are various types of intersex condition, with different causes, including:
- Klinefelter syndrome (see below)
- androgen insensitivity syndrome (AIS) in which the person has a Y chromosome, but the androgens (male sex hormones) are not produced as normal.
The nucleus of a human cell usually contains 46 chromosomes, comrpising 22 pairs of autosomes, plus two allosomes (sex chromosomes). The two allosomes are usually X and Y for a man, or X and X for a woman. Some other combinations are:
- 45,X – a female with one X chromosome missing, also known as Turner syndrome
- 47,XYY – a male with an extra Y chromosome
- 47,XXY – a male with an extra X chromosome, also known as Klinefelter syndrome
- 47,XXX – a female with an extra X chromosome
Notable intersex people
Some people who have been claimed to be intersex include:
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