What is the role of ethidium bromide in isopycnic centrifugation of cleared lysates?

What is the role of ethidium bromide in isopycnic centrifugation of cleared lysates? Correct Answer Intercalates and unwinds

EtBr binds by intercalating between the DNA basepairs and in doing so causes the plasmid DNA to unwind. Thus covalent circles can be separated from linear chromosomal DNA.

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The fluorescent dye such Ethidium is used for visualizing DNA. How do ethidium binds to DNA?