This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Techniques in molecular biology, Subject name: Biochemistry
DNA foot printing is used to detect 
Select and explain. 
A. Single nucleotide polymorphisms, B. Variable number of tandem repeats, C. Parent of origin of the child, D. DNA-protein interaction
D: DNA-protein interaction
Answer: D: DNA-protein interaction 
Explanation: Techniques of detection of DNA-Protein interaction : DNA footprinting Yeast one-hybrid system Electrophoretic mobility shift assay (EMSA)