a fairly uncommon chromosomal disorder wherein the young inherits the full complement of both female and male sex chromosomes. Inflicted people have a normal penis but small testicles and a small prostate, and about half grow enlarged breasts. IQ's of those analyzed have spanned from 20 to 76. Most instances have been discovered by screening individuals in mental health facilities and might not be symbolic of the full range of instances within the general populace.

XXXY SYNDROME: "When a child inherits the full chromosomes of both parents, they have XXXY syndrome. "
Cite this page: N., Pam M.S., "XXXY SYNDROME," in, April 29, 2013, (accessed September 23, 2021).