Down Syndrome, All are seen except?
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) t(14:21) t (15 : 21) o Very rarely long arm of chromosome 21 is triplicate (Paial trisomy)
t(14 ; 21)
Trisomy 21
t(11 : 14)
t (15 :21)