The nucleosome is the basic repeating subunit of chromatin. It consists of a nucleosome core particle of 146-147 base pairs of DNA wound 1.67 times around a histone octomer. I
…t has been compared to thread wrapped around a spool. If histone H1 is added to the core particle, you then have a chromatosome. Chromatosomes are connected by stretches of linker DNA that vary in size up to about 80 bp and produces the appearance of beads on a string. The term nucleosome is commonly used in reference to the nucleosome core particle but technically it is the chromatosome plus one stretch of linker of DNA; it forms a repeating unit of DNA of about 200 bp. ( Full Answer )