This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
Gene responsible for Anterior segment morphogenesis 
Select and explain. 
A. PAX 6, B. PIT X 2, C. TSG, D. GLC 1
A: PAX 6
Answer: A: PAX 6 
Explanation: GENETICS IN CORNEA * PAX 6 gene a/w- Ectodermal Ectodactyly dysplasia & eye morphogenesis *PITX2 gene- Axenfeld Riger Syndrome Corneal Dystrophy & Anomalies *Lattice & Granular Corneal Dystrophy- TGF B1, 5q31, AD *Macular - AR, 16q22 *Fuch's endothelial dystrophy: AD, COL8A2 *Megalocornea: XLR, mostly males are involved Extra edge: - Faulty migration of NCC causes anterior segment dysgenesis.