This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetic Disorders, Subject name: Biochemistry
Cat eye syndrome is: 
Select and explain. 
A. Trisomy 13, B. Trisomy 18, C. Trisomy 21, D. Trisomy 22
D: Trisomy 22
Answer: D: Trisomy 22 
Explanation: Cat eye syndrome Defect in chromosome number 22 sho arm (p) and a small section of the long arm (q) of chromosome 22 is present 3-4 times instead of the usual 2 times. C/F: Unilateral/bilateral iris coloboma Anal atresia Cleft palate Sho stature Hernias Renal abnormalities