Turner syndrome -: (A) 45XO, (B) 46XO, (C) 47XXX, (D) Trisomy 21
Answer is A. Ans. is 'a' i.e., 45XOTrisomy 13- Patau syndromeTrisomy 18- Edward syndromeTrisomy 21- Down syndromeXO- Turner syndromeXXY- Klinefelter syndrome