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BookmarkTurner syndrome is a human genetic abnormality, caused by a nondisjunction in the sex chromosomes that occurs in females (1 out of every 2,500 births).
Instead of the normal XX sex chromosomes, only one X chromosome is present and fully functional; this is called 45,X or X0..
For more information about the topic Turner syndrome, read the full article at Wikipedia.org, or see the following related articles:
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