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: Pathology
The gene responsible for folic acid transport is situated on which chromosome- 
Select and explain. 
A. 10, B. 5, C. X, D. 21
D: 21
Answer: D: 21 
Explanation: Folate transporter is the product of gene SLC 19 AI Salute carrier family 19 member which is located on Chromosone 21 q 223