Maternal transmission of a 21/1 translocation associated with Down's syndrome.
D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male