title: A mentally retarded male with karyotype 47,XY, plus mar equal ?i (18p).
mesh_terms: D000015:Abnormalities, Multiple / Q000209:etiology; D002869:Chromosome Aberrations / Q000175:diagnosis / Q000235:genetics*; D025063:Chromosome Disorders; D002903:Chromosomes, Human, 19-20; D003878:Dermatoglyphics; D004569:Electroencephalography; D006801:Humans; D007021:Hypospadias / Q000235:genetics; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D012729:Sex Chromosome Aberrations / Q000175:diagnosis; D012730:Sex Chromosomes