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Explain packaging of dna in eukaryotes and prokaryotes

Dear student,
Prokaryotes have circular DNA which forms looped chromosome with the help of nucleoid associated protein. In eukaryotes histones wrap DNA around them to form nucleosome (unit of chromosome) which further forms more condensed structures to finally form chromosome.

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Prokaryotes and eukaryotes package their DNA molecules with protein in structures called chromosomes. A prokaryotic chromosome is circular and resides in a cell region called the nucleoid. The types of proteins found in prokaryotic chromosomes, known as the nucleoid-associated proteins, differ from the histone proteins that appear in eukaryotic chromosomes and cause the prokaryotic chromosomes to form looped structures. Unique eukaryotic chromosome packaging features include tight coiling, dense packing, enclosure within a nuclear membrane and linear rather than circular structures.
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