<prompt> Down Syndrome, All are seen except?t14 ; 21Trisomy 21t11 : 14t 15 :21  <response>: Ans. is c i.e., t 11:14 In 95 of cases of Down Syndrome - trisomy of 21 Extra chromosome is of maternal in origin 1 have mosaic with 46 chromosomes o 4 have robesonian translocation. t 13 : 21 t14:21 t 15 : 21 o Very rarely long arm of chromosome 21 is triplicate Paial trisomy 