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
Triplex DNA is clue to 
Select and explain. 
A. Hoogsteen Pairing, B. Palindromic sequences, C. Large no. of guanosine repeats, D. PolypYrimidine tracts
A: Hoogsteen Pairing
Answer: A: Hoogsteen Pairing 
Explanation: Triple- stranded DNA- forms hydrogen bonds with another surface of the double helix through called Hoogsteenpairs.