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47 XYY syndrome: A genetic condition where males have an extra Y chromosome in each of their cells. Normally male cells have one X and one Y chromosome. This is not usually an inherited condition but a defect that occurs during cell division. Often the condition is asymptomatic. More detailed information about the symptoms, causes, and treatments of 47 XYY syndrome is available below.
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Genetic disorder that produces tall and in many cases disturbed behavioral males due to XYY karyotype. - (Source - Diseases Database)
47 XYY syndrome is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that 47 XYY syndrome, or a subtype of 47 XYY syndrome,
affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)
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