The level of dna packaging brought about by the formation of looks like beads on a string.

The level of DNA  packaging brought about by the formation of nucleosomes looks like beads on a string. 
 The DNA packaging process includes and describes how DNA is packaged so tightly into chromosomes and squeezed into a tiny nucleus.
A nucleosome is a section of DNA that is wrapped around a core of proteins.

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The best way to tell its true color is to look at the minerals streak