DNA wraps around histone proteins, forming nucleosomes and the so-called beads on a string structure (euchromatin). Multiple histones wrap into a 30-nanometer fiber consisting of nucleosome arrays in their most compact form (heterochromatin). Higher-level DNA supercoiling of the 30 nm fiber produces the metaphase chromosome (during mitosis and meiosis).
DNA wraps around histone proteins forming nucleosomes and the so-called beads on a string structure (euchromatin). Multiple histones wrap into a 30-nanometer fiber consisting of nucleosome arrays in their most compact form (heterochromatin). Higher-level DNA supercoiling of the 30 nm fiber produces the metaphase chromosome (during mitosis and meiosis).