This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Pierre robin syndrome is a 
Select and explain. 
A. Deformation, B. Malformation, C. Disruption, D. Sequence
D: Sequence
Answer: D: Sequence 
Explanation: Sequence describes anomalies that all develop sequentially from one insult.
Pierre robin sequence. Micrognathia → glossoptosis → cleft palate.