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XXXY syndrome

a relatively rare disorder in which a male inherits the full complement of both male and female sex chromosomes instead of either the normal two X chromosomes (46, XX) for females or the normal one X and one Y chromosome (46,XY) for males. Affected individuals have a normal penis but small testes and prostate, and about half develop enlarged breasts and have intellectual and developmental disabilities. Also called 48,XXXY syndrome.

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Psychology term of the day

June 17th 2024

motor dominance

motor dominance

the controlling influence of one cerebral hemisphere shown in motor activity, such as writing or throwing a ball.