[Lisowczyk]

hahaha thats pretty funny about the Y-chromosome thing.
"In the 1960s research into the linkage between violent crime and biology became more sophisticated, drawing upon the burgeoning discipline of genetics. Researcher Patricia Jacobs reported that a disproportionately large percentage of violent men in Scottish prisons had an extra Y chromosome- a genetic anomaly that affects about one in a thousand men in the general population[...] they described these XYY chromosome males as "double" males or "super" males and suggested that such men were taller than average and more inclined to criminal behavior"