Wrapping DNA into nucleosomes makes the molecule roughly how much shorter?

1. Nucleosome formation is the first stage of chromatin compaction. 2. A DNA molecule in this form is about seven times shorter than the double helix without the histones. 3. The beads are about 10 nanometres in diameter, against the 2-nanometre diameter of a bare double helix. 4. Further coiling into the 30-nanometre fibre and protein scaffolding adds the rest of the compaction. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 10 'Cell Reproduction', sections 10.1-10.5_