Prevalence of XYY and XXY Karyotypes in 337 Nonretarded Young Offenders

Cytogenetic survey of XYY males in two juvenile court populations, with a case report.

“…Absence of XYY males in this survey may be contrasted with the work of Hook and Kim (1970) in Albany, New York. They found 4 XYYs among 337 boys under the age of 16 in institutions for juvenile offenders.…”