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
Which of the following blotting technique is used to detect DNA? 
Select and explain. 
A. Western blot, B. Southern blot, C. Eastern blot, D. Nohern blot
B: Southern blot
Answer: B: Southern blot 
Explanation: Southern blot is used to detect DNA Nohern blot is used to detect RNA Western blot is used to detect proteins.