This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics of Common Disorders, Subject name: Pediatrics
[{'content': 'Turner syndrome - \nSelect and explain. \nA. 45XO, B. 46XO, C. 47XXX, D. Trisomy 21', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 45XOTrisomy 13- Patau syndromeTrisomy 18- Edward syndromeTrisomy 21- Down syndromeXO- Turner syndromeXXY- Klinefelter syndrome", 'role': 'assistant'}]