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
Adenine in DNA binds with ? 
Select and explain. 
A. Thymine, B. Guanine, C. Cytosine, D. Uracil
A: Thymine
Answer: A: Thymine 
Explanation: Ans. is 'a' i.e., Thymine Adenine is always paired with thymine by formation of two hydrogen bonds. Guanine is always paired with cytosine by formation of three hydrogen bonds.