What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under an electron microscope?

Genes

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Nucleotides

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Nucleosomes

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Base pairs

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Solution

The correct option is C
Nucleosomes

DNA in eukaryotic cells coils around a histone core to form a nucleosome. A number of nucleosomes appear together like "beads on a string".

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What are the structures called that give an appearance as ‘beads on a string’ in the chromosomes when viewed under an electron microscope?

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