The Havoc of an Undetected Extra Chromosome

By JANE E. BRODY AUG. 31, 2004  The New York Times 2004 Sam’s parents began to suspect something was not quite right when at age 2, their son still was not walking and he said nothing that made any sense. Laboratory and neurological tests showed no abnormalities. But a genetic test revealed that Sam’s cells contained an …

XXY males, Klinefelter

XXY Males – Klinefelter Syndrome

XXY Males – Klinefelter syndrome   HEALTH TOPIC BY GLENDA FAUNTLEROY DEC 2012 Although considered the most common chromosomal disorder in humans, the subtle symptoms of Klinefelter syndrome can result in a man living with the condition his entire life without ever being diagnosed. Klinefelter affects only males. Instead of having the usual XY chromosome …