Unwinding of DNA is done by: (A) DNA polymerase, (B) DNA primase, (C) Helicase, (D) DNA ligase
Answer is C. In addition to binding to the nucleosome, the H1 protein binds to the "linker DNA" (approximately 20-80 nucleotides in length) region between nucleosomes, helping stabilize the zig-zagged 30 nm chromatin fiber Ref-Sathyanarayana 4/e p360