Are Xyy Males More Prone to Aggressive Behavior Than Xy Males?
Viewpoint: Yes, the best studies of XYY males indicate that they are more prone to aggressive behavior than XY males.
Viewpoint: No, the ...
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Extra Y Hypothesis
The XYY karyotype was first described in a 1965 study of 197 males in a Scottish maximum-security prison. The study's findings indicated that 4.5% of the violent offenders studied h...
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Xyy Syndrome
XYY syndrome is a chromosome disorder that affects males. Males with this disorder have an extra Y chromosome.
The XYY syndrome was previously considered the "supermale" syndrome where me...
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Are Xyy Males More Prone to Aggressive Behavior Than Xy Males
Extra Y Hypothesis