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: Biochemistry
[{'content': 'The gene for folic acid transpoer is located on which chromosome: \nSelect and explain. \nA. 5, B. 15, C. 21, D. X', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. 21Folic acid transpoer gene (SLC 19 AI solute carrier family 19) is located on long arm of chromosome 21 (21q) Q at band 22.3. Transpo of folate occurs by potocytosis which functionally couples folate receptor, folate transpoer and V- type h+ pump.', 'role': 'assistant'}]