This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cytogenetics, Subject name: Pediatrics
Trisomy 13 is seen in - 
Select and explain. 
A. Edward syndrome, B. Patau syndrome, C. Down syndrome, D. Tumer syndrome
B: Patau syndrome
Answer: B: Patau syndrome 
Explanation: Ans. is 'b' i.e., Patau syndrome Trisomy 13- Patau syndromeTrisomy 18- Edward syndromeTrisomy 21- Down syndromeXO- Turner syndromeXXY- Klinefelter syndrome