title: Partial trisomy 12 in a mentally retarded boy and translocation (12;21) in his mother.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics; D000328:Adult; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005145:Face; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008856:Microscopy, Fluorescence; D010375:Pedigree; D013194:Staining and Labeling; D014178:Translocation, Genetic; D014314:Trisomy