A 45-year-old member asked:
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what is xyy syndrome or disease?

1 doctor answer
Dr. Ed Friedlander
43 years experience Pathology
Extra Y chromosome: About one man in 1000 has an extra Y chromosome and it's likely to be discovered only if there's some investigation because of some problem such as autism. This has given rise to the myth that autism, criminal behavior and so forth are more common in such men. They average taller and tend to get worse acne. The "criminal" claims haven't held up to real science.
Answered on Jul 15, 2017

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