A case of nondisjunction of chromosome 21 (47,X,Yqs,+21) in an Indian family with Yqs.
A mentally retarded male with few Down syndrome features showed a satellited long arm of Y (Yqs) and trisomy 21. Metaphase spreads were studied using Q-, C-, G-banding methods and silver staining.
D000328:Adult; D002869:Chromosome Aberrations / Q000235:genetics*; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002904:Chromosomes, Human, 21-22 and Y; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D012729:Sex Chromosome Aberrations / Q000235:genetics; D014314:Trisomy