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Question

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


A

Genes

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B

Nucleotides

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C

Nucleosomes

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D

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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