This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
Trisomy is seen in which of following? 
Select and explain. 
A. Turner syndrome, B. Fragile-X syndrome, C. Noonan syndrome, D. Edward syndrome
D: Edward syndrome
Answer: D: Edward syndrome 
Explanation: Ans. is 'd' i.e., Edward syndrome Important trisomies are Down syndrome (Trisomy 21), Edward syndrome (Trisomy 18); Patau syndrome (Trisomy 13), Cat eye syndrome (Trisomy 22)