XYY syndrome legal definition of XYY syndrome
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XYY syndrome the theory that a man with an extra Y-chromosome is predisposed towards violence and aggression and hence the basis, usually unsuccessful, for a defence argument.
Collins Dictionary of Law © W.J. Stewart, 2006
References in periodicals archive
A total of 51 infertile males with nonmosaic 47, XYY syndrome
who underwent FISH-PGD treatment from January 2012 to May 2017 were included in the study.
He suffered from XYY syndrome
, a condition in which the human male has an extra Y chromosome.
Harris noted that in one court case involving a defendant with XYY syndrome
, the court ruled that chromosomal abnormalities have not yet been established as a cause for behavior, echoing the findings of other courts.