This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of DNA, Subject name: Biochemistry
Linker DNA is bound to which of the following histone? 
Select and explain. 
A. H1, B. H2A, C. H2B, D. H3
A: H1
Answer: A: H1 
Explanation: Linker DNA The DNA between two nucleosomes Bound by H1 histone. Made up of 30 base pairs.